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CPM OPERATING SYSTEMS/CPM 3.X/CPM 3.0/3.0 PLM SOURCE/PLIDIO.ASM
Normal file
618
CPM OPERATING SYSTEMS/CPM 3.X/CPM 3.0/3.0 PLM SOURCE/PLIDIO.ASM
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@@ -0,0 +1,618 @@
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name 'DIOMOD'
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title 'Direct CP/M Calls From PL/I-80'
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;
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;***********************************************************
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;* *
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;* cp/m calls from pl/i for direct i/o *
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;* *
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;***********************************************************
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public memptr ;return pointer to base of free mem
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public memsiz ;return size of memory in bytes
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public memwds ;return size of memory in words
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public dfcb0 ;return address of default fcb 0
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public dfcb1 ;return address of default fcb 1
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public dbuff ;return address of default buffer
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public reboot ;system reboot (#0)
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public rdcon ;read console character (#1)
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public wrcon ;write console character(#2)
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public rdrdr ;read reader character (#3)
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public wrpun ;write punch character (#4)
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public wrlst ;write list character (#5)
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public coninp ;direct console input (#6a)
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public conout ;direct console output (#6b)
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public rdstat ;read console status (#6c)
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public getio ;get io byte (#8)
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public setio ;set i/o byte (#9)
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public wrstr ;write string (#10)
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public rdbuf ;read console buffer (#10)
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public break ;get console status (#11)
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public vers ;get version number (#12)
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public reset ;reset disk system (#13)
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public select ;select disk (#14)
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public open ;open file (#15)
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public close ;close file (#16)
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public sear ;search for file (#17)
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public searn ;search for next (#18)
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public delete ;delete file (#19)
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public rdseq ;read file sequential mode (#20)
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public wrseq ;write file sequential mode (#21)
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public make ;create file (#22)
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public rename ;rename file (#23)
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public logvec ;return login vector (#24)
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public curdsk ;return current disk number (#25)
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public setdma ;set DMA address (#26)
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public allvec ;return address of alloc vector (#27)
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public wpdisk ;write protect disk (#28)
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public rovec ;return read/only vector (#29)
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public filatt ;set file attributes (#30)
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public getdpb ;get base of disk parm block (#31)
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public getusr ;get user code (#32a)
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public setusr ;set user code (#32b)
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public rdran ;read random (#33)
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public wrran ;write random (#34)
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public filsiz ;random file size (#35)
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public setrec ;set random record pos (#36)
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public resdrv ;reset drive (#37)
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public wrranz ;write random, zero fill (#40)
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public sgscb ;set/get System Control Block byte/word
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;
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;
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extrn ?begin ;beginning of free list
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extrn ?boot ;system reboot entry point
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extrn ?bdos ;bdos entry point
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extrn ?dfcb0 ;default fcb 0
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extrn ?dfcb1 ;default fcb 1
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extrn ?dbuff ;default buffer
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;
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;***********************************************************
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;* *
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;* equates for interface to cp/m bdos *
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;* *
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;***********************************************************
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cr equ 0dh ;carriage return
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lf equ 0ah ;line feed
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eof equ 1ah ;end of file
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;
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readc equ 1 ;read character from console
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writc equ 2 ;write console character
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rdrf equ 3 ;reader input
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punf equ 4 ;punch output
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listf equ 5 ;list output function
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diof equ 6 ;direct i/o, version 2.0
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getiof equ 7 ;get i/o byte
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setiof equ 8 ;set i/o byte
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printf equ 9 ;print string function
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rdconf equ 10 ;read console buffer
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statf equ 11 ;return console status
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versf equ 12 ;get version number
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resetf equ 13 ;system reset
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seldf equ 14 ;select disk function
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openf equ 15 ;open file function
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closef equ 16 ;close file
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serchf equ 17 ;search for file
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serchn equ 18 ;search next
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deletf equ 19 ;delete file
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readf equ 20 ;read next record
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writf equ 21 ;write next record
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makef equ 22 ;make file
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renamf equ 23 ;rename file
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loginf equ 24 ;get login vector
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cdiskf equ 25 ;get current disk number
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setdmf equ 26 ;set dma function
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getalf equ 27 ;get allocation base
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wrprof equ 28 ;write protect disk
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getrof equ 29 ;get r/o vector
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setatf equ 30 ;set file attributes
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getdpf equ 31 ;get disk parameter block
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userf equ 32 ;set/get user code
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rdranf equ 33 ;read random
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wrranf equ 34 ;write random
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filszf equ 35 ;compute file size
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setrcf equ 36 ;set random record position
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rsdrvf equ 37 ;reset drive function
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wrrnzf equ 40 ;write random zero fill
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scbf equ 49 ;set/get SCB
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;
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; utility functions
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;***********************************************************
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;* *
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;* general purpose routines used upon entry *
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;* *
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;***********************************************************
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;
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getp1: ;get single byte parameter to register e
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mov e,m ;low (addr)
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inx h
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mov d,m ;high(addr)
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xchg ;hl = .char
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mov e,m ;to register e
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ret
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;
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getp2: ;get single word value to DE
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getp2i: ;(equivalent to getp2)
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call getp1
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inx h
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mov d,m ;get high byte as well
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ret
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;
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getver: ;get cp/m or mp/m version number
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push h ;save possible data adr
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mvi c,versf
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call ?bdos
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pop h ;recall data addr
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ret
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;
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chkv20: ;check for version 2.0 or greater
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call getver
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cpi 20
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rnc ;return if > 2.0
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; error message and stop
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jmp vererr ;version error
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;
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chkv22: ;check for version 2.2 or greater
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call getver
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cpi 22h
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rnc ;return if >= 2.2
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vererr:
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;version error, report and terminate
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lxi d,vermsg
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mvi c,printf
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call ?bdos ;write message
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jmp ?boot ;and reboot
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vermsg: db cr,lf,'Later CP/M or MP/M Version Required$'
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;
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;***********************************************************
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;* *
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;***********************************************************
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memptr: ;return pointer to base of free storage
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lhld ?begin
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ret
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;
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;***********************************************************
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;* *
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;***********************************************************
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memsiz: ;return size of free memory in bytes
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lhld ?bdos+1 ;base of bdos
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xchg ;de = .bdos
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lhld ?begin ;beginning of free storage
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mov a,e ;low(.bdos)
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sub l ;-low(begin)
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mov l,a ;back to l
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mov a,d ;high(.bdos)
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sbb h
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mov h,a ;hl = mem size remaining
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ret
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;
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;***********************************************************
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;* *
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;***********************************************************
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memwds: ;return size of free memory in words
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call memsiz ;hl = size in bytes
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mov a,h ;high(size)
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ora a ;cy = 0
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rar ;cy = ls bit
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mov h,a ;back to h
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mov a,l ;low(size)
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rar ;include ls bit
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mov l,a ;back to l
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ret ;with wds in hl
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;
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;***********************************************************
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;* *
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;***********************************************************
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dfcb0: ;return address of default fcb 0
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lxi h,?dfcb0
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ret
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;
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;***********************************************************
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;* *
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;***********************************************************
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dfcb1: ;return address of default fcb 1
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lxi h,?dfcb1
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ret
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;
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;***********************************************************
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;* *
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;***********************************************************
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dbuff: ;return address of default buffer
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lxi h,?dbuff
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ret
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;
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;***********************************************************
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;* *
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;***********************************************************
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reboot: ;system reboot (#0)
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jmp ?boot
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;
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;***********************************************************
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;* *
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;***********************************************************
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rdcon: ;read console character (#1)
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;return character value to stack
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mvi c,readc
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jmp chrin ;common code to read char
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;
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;***********************************************************
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;* *
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;***********************************************************
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wrcon: ;write console character(#2)
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;1->char(1)
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mvi c,writc ;console write function
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jmp chrout ;to write the character
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;
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;***********************************************************
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;* *
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;***********************************************************
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rdrdr: ;read reader character (#3)
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mvi c,rdrf ;reader function
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chrin:
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;common code for character input
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call ?bdos ;value returned to A
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pop h ;return address
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push psw ;character to stack
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inx sp ;delete flags
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mvi a,1 ;character length is 1
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pchl ;back to calling routine
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;
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;***********************************************************
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;* *
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;***********************************************************
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wrpun: ;write punch character (#4)
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;1->char(1)
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mvi c,punf ;punch output function
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jmp chrout ;common code to write chr
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;
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;***********************************************************
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;* *
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;***********************************************************
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wrlst: ;write list character (#5)
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;1->char(1)
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mvi c,listf ;list output function
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chrout:
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;common code to write character
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;1-> character to write
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call getp1 ;output char to register e
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jmp ?bdos ;to write and return
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;
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;***********************************************************
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;* *
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;***********************************************************
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coninp: ;perform console input, char returned in stack
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lxi h,chrstr ;return address
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push h ;to stack for return
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lhld ?boot+1 ;base of bios jmp vector
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lxi d,2*3 ;offset to jmp conin
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dad d
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pchl ;return to chrstr
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;
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chrstr: ;create character string, length 1
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pop h ;recall return address
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push psw ;save character
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inx sp ;delete psw
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mvi a,1 ;string length is 1
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pchl ;return to caller
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;
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;***********************************************************
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;* *
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;***********************************************************
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conout: ;direct console output
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;1->char(1)
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call getp1 ;get parameter
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mov c,e ;character to c
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lhld ?boot+1 ;base of bios jmp
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lxi d,3*3 ;console output offset
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dad d ;hl = .jmp conout
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pchl ;return through handler
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;
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;***********************************************************
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;* *
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;***********************************************************
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rdstat: ;direct console status read
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lxi h,rdsret ;read status return
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push h ;return to rdsret
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lhld ?boot+1 ;base of jmp vector
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lxi d,1*3 ;offset to .jmp const
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dad d ;hl = .jmp const
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pchl
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;
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;***********************************************************
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;* *
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;***********************************************************
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getio: ;get io byte (#8)
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mvi c,getiof
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jmp ?bdos ;value returned to A
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;
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;***********************************************************
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;* *
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;***********************************************************
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setio: ;set i/o byte (#9)
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;1->i/o byte
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call getp1 ;new i/o byte to E
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mvi c,setiof
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jmp ?bdos ;return through bdos
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;
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;***********************************************************
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;* *
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;***********************************************************
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wrstr: ;write string (#10)
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;1->addr(string)
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call getp2 ;get parameter value to DE
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mvi c,printf ;print string function
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jmp ?bdos ;return through bdos
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;
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;***********************************************************
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;* *
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;***********************************************************
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rdbuf: ;read console buffer (#10)
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;1->addr(buff)
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call getp2i ;DE = .buff
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mvi c,rdconf ;read console function
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jmp ?bdos ;return through bdos
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;
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;***********************************************************
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;* *
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;***********************************************************
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break: ;get console status (#11)
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mvi c,statf
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call ?bdos ;return through bdos
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;
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rdsret: ;return clean true value
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ora a ;zero?
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rz ;return if so
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mvi a,0ffh ;clean true value
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ret
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;
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;***********************************************************
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;* *
|
||||
;***********************************************************
|
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vers: ;get version number (#12)
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mvi c,versf
|
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jmp ?bdos ;return through bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
reset: ;reset disk system (#13)
|
||||
mvi c,resetf
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jmp ?bdos
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;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
select: ;select disk (#14)
|
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;1->fixed(7) drive number
|
||||
call getp1 ;disk number to E
|
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mvi c,seldf
|
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jmp ?bdos ;return through bdos
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
open: ;open file (#15)
|
||||
;1-> addr(fcb)
|
||||
call getp2i ;fcb address to de
|
||||
mvi c,openf
|
||||
jmp ?bdos ;return through bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
close: ;close file (#16)
|
||||
;1-> addr(fcb)
|
||||
call getp2i ;.fcb to DE
|
||||
mvi c,closef
|
||||
jmp ?bdos ;return through bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
sear: ;search for file (#17)
|
||||
;1-> addr(fcb)
|
||||
call getp2i ;.fcb to DE
|
||||
mvi c,serchf
|
||||
jmp ?bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
searn: ;search for next (#18)
|
||||
mvi c,serchn ;search next function
|
||||
jmp ?bdos ;return through bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
delete: ;delete file (#19)
|
||||
;1-> addr(fcb)
|
||||
call getp2i ;.fcb to DE
|
||||
mvi c,deletf
|
||||
jmp ?bdos ;return through bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
rdseq: ;read file sequential mode (#20)
|
||||
;1-> addr(fcb)
|
||||
call getp2i ;.fcb to DE
|
||||
mvi c,readf
|
||||
jmp ?bdos ;return through bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
wrseq: ;write file sequential mode (#21)
|
||||
;1-> addr(fcb)
|
||||
call getp2i ;.fcb to DE
|
||||
mvi c,writf
|
||||
jmp ?bdos ;return through bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
make: ;create file (#22)
|
||||
;1-> addr(fcb)
|
||||
call getp2i ;.fcb to DE
|
||||
mvi c,makef
|
||||
jmp ?bdos ;return through bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
rename: ;rename file (#23)
|
||||
;1-> addr(fcb)
|
||||
call getp2i ;.fcb to DE
|
||||
mvi c,renamf
|
||||
jmp ?bdos ;return through bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
logvec: ;return login vector (#24)
|
||||
mvi c,loginf
|
||||
jmp ?bdos ;return through BDOS
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
curdsk: ;return current disk number (#25)
|
||||
mvi c,cdiskf
|
||||
jmp ?bdos ;return value in A
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
setdma: ;set DMA address (#26)
|
||||
;1-> pointer (dma address)
|
||||
call getp2 ;dma address to DE
|
||||
mvi c,setdmf
|
||||
jmp ?bdos ;return through bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
allvec: ;return address of allocation vector (#27)
|
||||
mvi c,getalf
|
||||
jmp ?bdos ;return through bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
wpdisk: ;write protect disk (#28)
|
||||
call chkv20 ;must be 2.0 or greater
|
||||
mvi c,wrprof
|
||||
jmp ?bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
rovec: ;return read/only vector (#29)
|
||||
call chkv20 ;must be 2.0 or greater
|
||||
mvi c,getrof
|
||||
jmp ?bdos ;value returned in HL
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
filatt: ;set file attributes (#30)
|
||||
;1-> addr(fcb)
|
||||
call chkv20 ;must be 2.0 or greater
|
||||
call getp2i ;.fcb to DE
|
||||
mvi c,setatf
|
||||
jmp ?bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
getdpb: ;get base of current disk parm block (#31)
|
||||
call chkv20 ;check for 2.0 or greater
|
||||
mvi c,getdpf
|
||||
jmp ?bdos ;addr returned in HL
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
getusr: ;get user code to register A
|
||||
call chkv20 ;check for 2.0 or greater
|
||||
mvi e,0ffh ;to get user code
|
||||
mvi c,userf
|
||||
jmp ?bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
setusr: ;set user code
|
||||
call chkv20 ;check for 2.0 or greater
|
||||
call getp1 ;code to E
|
||||
mvi c,userf
|
||||
jmp ?bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
rdran: ;read random (#33)
|
||||
;1-> addr(fcb)
|
||||
call chkv20 ;check for 2.0 or greater
|
||||
call getp2i ;.fcb to DE
|
||||
mvi c,rdranf
|
||||
jmp ?bdos ;return through bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
wrran: ;write random (#34)
|
||||
;1-> addr(fcb)
|
||||
call chkv20 ;check for 2.0 or greater
|
||||
call getp2i ;.fcb to DE
|
||||
mvi c,wrranf
|
||||
jmp ?bdos ;return through bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
filsiz: ;compute file size (#35)
|
||||
call chkv20 ;must be 2.0 or greater
|
||||
call getp2 ;.fcb to DE
|
||||
mvi c,filszf
|
||||
jmp ?bdos ;return through bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
setrec: ;set random record position (#36)
|
||||
call chkv20 ;must be 2.0 or greater
|
||||
call getp2 ;.fcb to DE
|
||||
mvi c,setrcf
|
||||
jmp ?bdos ;return through bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
resdrv: ;reset drive function (#37)
|
||||
;1->drive vector - bit(16)
|
||||
call chkv22 ;must be 2.2 or greater
|
||||
call getp2 ;drive reset vector to DE
|
||||
mvi c,rsdrvf
|
||||
jmp ?bdos ;return through bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
wrranz: ;write random, zero fill function
|
||||
;1-> addr(fcb)
|
||||
call chkv22 ;must be 2.2 or greater
|
||||
call getp2i ;.fcb to DE
|
||||
mvi c,wrrnzf
|
||||
jmp ?bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
sgscb: ;set/get SCB byte/word
|
||||
;1-> addr(SCB structure)
|
||||
call getp2
|
||||
mvi c,scbf
|
||||
jmp ?bdos
|
||||
;
|
||||
;***********************************************************
|
||||
;* *
|
||||
;***********************************************************
|
||||
end
|
||||
Reference in New Issue
Block a user