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Digital Research
This commit is contained in:
Sepp J Morris
2020-11-06 18:50:37 +01:00
parent 621ed8ccaf
commit 31738079c4
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509
MPM OPERATING SYSTEMS/MPM-86/MPM-86 2.0 SOURCES/05/TMP.A86 Normal file
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;*****************************************************
;*
;* Terminal Message Processor
;*
;* The TMP determines the user interface to MPM.
;* Much of the interface is available though
;* system calls. This TMP takes advantage of
;* as much as possible for simplicity. The TMP
;* could, for instance, be easily modified to
;* force logins and have non-standard defaults.
;*
;* With a little more work, The TMP could do all
;* command parsing and File Loading instead of
;* using the CLI COMMAND FUNCTION. This is also
;* the place to AUTOLOAD programs for specific
;* users. Suggestions are given in the MP/M-86
;* SYSTEM'S GUIDE.
;*
;*****************************************************
true equ 0ffh
false equ 0
unknown equ 0
mpmint equ 224 ; int vec for mpm
cr equ 13
lf equ 10
mpm_conout equ 2
mpm_conwrite equ 9
mpm_conread equ 10
mpm_diskselect equ 14
mpm_getdefdisk equ 25
mpm_usercode equ 32
mpm_freedrive equ 39
mpm_conattach equ 146
mpm_condetach equ 147
mpm_setdefcon equ 148
mpm_clicmd equ 150
mpm_parse equ 152
mpm_setdeflst equ 160
mpm_getdeflst equ 164
ps_run equ 00 ; on ready list root
pf_sys equ 001h ; system process
pf_keep equ 002h ; do not terminate
s_mpmseg equ word ptr 40H ;begin MPM segment
s_sysdisk equ byte ptr 04bh ;system disk
s_ncns equ byte ptr 47H ;sys. consoles
s_version equ word ptr 78h ;ofst ver. str in SUP
rsp_top equ 0
rsp_md equ 008h
rsp_pd equ 010h
rsp_uda equ 040h
rsp_bottom equ 140h
e_no_memory equ 3 ; cant find memory
e_no_pd equ 12 ; no free pd's
e_q_full equ 15 ; full queue
e_illdisk equ 23 ; illegal disk #
e_badfname equ 24 ; illegal filename
e_badftype equ 25 ; illegal filetype
e_bad_load equ 28 ; bad ret. from BDOS load
e_bad_read equ 29 ; bad ret. from BDOS read
e_bad_open equ 30 ; bad ret. from BDOS open
e_nullcmd equ 31 ; null command sent
e_ill_lst equ 37 ; illegal list device
e_ill_passwd equ 38 ; illegal password
;*****************************************************
;*
;* TMP Shared Code and Constant Area
;*
;*****************************************************
cseg
org 0
;===
mpm: ; INTERFACE ROUTINE FOR SYSTEM ENTRY POINTS
;===
int mpmint ! ret
;===
tmp: ; PROGRAM MAIN - INITIALIZATION
;===
; set default console # = TMP#
mov dl,defconsole ! call setconsole
; set default disk = drive A
push ds ! mov ds,sysdatseg
mov dl,.s_sysdisk ! pop ds
call setdisk
; set default user # = console
mov dl,defconsole ! call setuser
; print version
call attach
push ds ! mov ds,sysdatseg
mov dx,.s_version
mov ds,.s_mpmseg
call print_ds_string ! pop ds
call detach
; THIS IS WHERE A LOGIN ROUTINE MIGHT
; BE IMPLEMENTED. THE DATA FILE THAT
; CONTAINS THE USER NAME AND PASSWORD
; MIGHT ALSO CONTAIN AN INITIAL DEFAULT
; DISK AND USER NUMBER FOR THAT USER.
;===========
nextcommand: ; LOOP FOREVER
;===========
; free drive
mov dx,0ffffh ! call freedrive
; attach console
call attach
; print CR,LF if we just sent command
cmp cmdsent,false ! je noclearline
mov cmdsent,false
call crlf
noclearline:
; set up and print user prompt
; get current default user # and disk
; this call should be made on every
; loop in case the last command
; has changed the default.
mov dl,cr ! call prchar
call getuser
mov dl,bl ! call prnum
call getdisk
mov dl,'A' ! add dl,bl
call prchar
mov dx,offset prompt
call print_string
; Read Command from Console
mov dx,offset read_buf ! call conread
; echo newline
mov dl,lf ! call prchar
; make sure not a null command
lea bx,clicb_cmd
cmp read_blen,0 ! je gonextcmd
cmp byte ptr [bx],';' ! je gonextcmd
; see if disk change
; if 'X:' change def disk to X
cmp read_blen,2 ! jne clicall
cmp byte ptr 1[bx],':'
jne clicall
; change default disk
mov dl,[bx] ;get disk name
and dl,5fh ;Upper Case
sub dl,'A' ;disk number
; check bounds
cmp dl,0 ! jb gonextcmd
cmp dl,15 ! ja gonextcmd
; select default disk
call setdisk
gonextcmd: jmp nextcommand
;=======
clicall: ; SEND CLI COMMAND
;=======
; put null at end of input
mov bx,offset clicb_cmd
mov al,read_blen ! mov ah,0
add bx,ax ! mov byte ptr [bx],0
; copy command string for err
; reporting later and to check
; for built in commands...
mov cx,64
mov si,offset clicb_cmd
mov di,offset savebuf
push ds ! pop es
rep movsw
; parse front to see if
; built in command
mov si,offset fcb
mov di,offset savebuf
call parsefilename
jcxz goodparse
sub bx,bx ! mov bl,read_blen
add bx,offset savebuf
mov byte ptr [bx],'$'
jmp clierror
goodparse: mov parseret,bx
cmp bx,0 ! jne haveatail
mov bl,read_blen
add bx,offset savebuf
haveatail: mov byte ptr [bx],'$' ! inc bx
cmp fcb,0 ! je try_builtin
jmp not_builtin
; is it USER command?
try_builtin: mov si,offset fcb ! inc si
mov di,offset usercmd
push cs ! pop es
mov cx,4 ! repz cmpsw
jnz notuser
mov si,offset fcb
mov di,parseret
cmp di,0 ! je pruser
inc di
call parsefilename
cmp cx,0 ! jne pruser
mov si,offset fcb
inc si
mov dx,[si]
call a_to_b
cmp bl,15 ! ja usererr
mov dl,bl
call setuser
jmp pruser
usererr: mov dx,offset usererrmsg
call printstring
pruser: mov dx,offset usermsg
call printstring
call getuser
mov dl,bl ! call prnum
call crlf
jmp nextcommand
notuser:
mov si,offset fcb ! inc si
mov di,offset printercmd
push cs ! pop es
mov cx,4 ! repz cmpsw
jnz notprinter
mov si,offset fcb
mov di,parseret
cmp di,0 ! je prprinter
inc di
call parsefilename
cmp cx,0 ! jne prprinter
mov si,offset fcb
inc si
mov dx,[si]
call a_to_b
cmp bl,0ffh
je printererr
mov dl,bl
call setlist
jcxz prprinter
printererr: mov dx,offset printemsg
call printstring
prprinter: mov dx,offset printermsg
call printstring
call getlist
mov dl,bl ! call prnum
call crlf
jmp nextcommand
notprinter:
not_builtin:
; initialize Cli Control Block
mov clicb_net,0
; make cli call
mov cmdsent,true
lea dx,clicb ! mov cl,mpm_clicmd
call mpm
cmp bx,0 ! jne clierror
jmp nextcommand
;========
clierror:
;========
; Cli call unsuccesful, analyze and display err msg
; input: CX = ERROR CODE
;null command?
cmp cx,e_nullcmd ! jne not_nullcmd
mov cmdsent,false
jmp nextcommand
not_nullcmd:
;no memory?
cmp cx,e_no_memory ! jne memory_ok
mov dx,offset memerr ! jmp showerr
memory_ok:
;no pd in table?
cmp cx,e_no_pd ! jne pd_ok
mov dx,offset pderr ! jmp showerr
pd_ok:
;bad file spec?
cmp cx,e_badfname ! je fname_bad
cmp cx,e_illdisk ! je fname_bad
cmp cx,e_ill_passwd ! je fname_bad
cmp cx,e_badftype ! jne fname_ok
fname_bad: mov dx,offset fnameerr ! jmp showerr
fname_ok:
;bad load?
cmp cx,e_bad_load ! je load_bad
cmp cx,e_bad_read ! jne load_ok
load_bad: mov dx,offset loaderr ! jmp showerr
load_ok:
;bad open?
cmp cx,e_bad_open ! jne open_ok
mov dx,offset openerr ! jmp showerr
open_ok:
;RSP que full?
cmp cx,e_q_full ! jne que_ok
mov dx,offset qfullerr ! jmp showerr
que_ok:
;some other error...
mov dx,offset catcherr
;jmp showerr
showerr: ; Print Error String
; input: DX = address of Error
; string in CSEG
push dx
mov dx,offset savebuf ! call print_ds_string
mov dl,':' ! call prchar
mov dl,' ' ! call prchar
pop dx
call printstring ! call crlf
jmp nextcommand
parsefilename: ; SI = fcb DI = string
mov cx,mpm_parse
mov bx,offset pcb
mov [bx],di ! mov 2[bx],si
mov dx,bx ! jmp mpm
a_to_b: ;dl = 1st char, dh = 2nd char
cmp dh,' ' ! jne atob2char
mov dh,dl ! mov dl,'0'
atob2char: cmp dh,'0' ! jb atoberr
cmp dh,'9' ! ja atoberr
cmp dl,'0' ! jb atoberr
cmp dl,'9' ! ja atoberr
sub dh,'0' ! sub dl,'0'
mov ax,0 ! mov al,dl
push dx ! mov cl,10
mul cl ! pop dx
mov dl,dh ! mov dh,0
add ax,dx
mov bx,ax ! ret
atoberr: mov bl,0ffh ! ret
prnum: ; dl = num (0-15)
cmp dl,10 ! jb prnum_one
push dx
mov dl,'1' ! call prchar
pop dx ! sub dl,10
prnum_one: add dl,'0'
; jmp prchar
prchar: mov cl,mpm_conout ! jmp mpm1
getuser: mov dl,0ffh
setuser: mov cl,mpm_usercode ! jmp mpm1
crlf: mov dx,offset crlfstr
;jmp printstring
printstring: push ds ! mov ax,cs ! mov ds,ax
call print_ds_string ! pop ds ! ret
print_ds_string:mov cl,mpm_conwrite ! jmps mpm1
setconsole: mov cl,mpm_setdefcon ! jmps mpm1
setdisk: mov cl,mpm_diskselect ! jmps mpm1
getdisk: mov cl,mpm_getdefdisk ! jmps mpm1
setlist: mov cl,mpm_setdeflst ! jmps mpm1
getlist: mov cl,mpm_getdeflst ! jmps mpm1
attach: mov cl,mpm_conattach ! jmps mpm1
detach: mov cl,mpm_condetach ! jmps mpm1
conread: mov cl,mpm_conread ! jmps mpm1
freedrive: mov cl,mpm_freedrive ! jmps mpm1
mpm1: jmp mpm
;*****************************************************
;*
;* CONSTANTS (IN SHARED CODE SEGMENT)
;*
;*****************************************************
prompt db '>$'
crlfstr db 13,10,'$'
memerr db '?Not Enough Memory$'
pderr db '?PD Table Full$'
fnameerr db '?Bad File Spec$'
loaderr db '?Load Error$'
openerr db '?Can''t Find Command$'
catcherr db '?$'
qfullerr db '?RSP Command Que Full$'
usererrmsg db 13,10,'Invalid User Number,'
db ' IGNORED',13,10,'$'
usermsg db 13,10,'User Number = $'
printemsg db 13,10,'Invalid Printer Number,'
db ' IGNORED',13,10,'$'
printermsg db 13,10,'Printer Number = $'
usercmd db 'USER '
printercmd db 'PRINTER '
;*****************************************************
;*
;* TMP Data Area - this area is copied once for
;* each system console. The 'defconsole'
;* field is unique for each copy
;* - Each Data Area is run by a common
;* shared code segment.
;*
;*****************************************************
DSEG
org rsp_top
sysdatseg dw 0
sdatvar dw s_ncns
defconsole db 0,0
dw 0,0,0,0,0
org rsp_pd
pd dw 0,0 ; link fields
db ps_run ; status
db 198 ; priority
dw pf_sys+pf_keep ; flags
db 'Tmp ' ; Name
dw offset uda/10h ; uda seg
db 0,0 ; disk,user
db 0,0 ; ldisk,luser
dw 0ffffh ; mem
dw 0,0 ; dvract,wait
db 0,0 ; org,net
dw 0 ; parent
db 0,0 ; cns,abort
db 0,0 ; cin,cout
db 0,0 ; lst,sf3
db 0,0 ; sf4,sf5
dw 0,0 ; reserved
dw 0,0 ; pret,scratch
org rsp_uda
uda dw 0,offset dma,0,0 ;0-7
dw 0,0,0,0 ;8-fh
dw 0,0,0,0 ;10-17
dw 0,0,0,0 ;18-1f
dw 0,0,0,0 ;20-27
dw 0,0,0,0 ;28-2f
dw 0,0,offset stack_top,0 ;30-37
dw 0,0,0,0 ;38-3f
dw 0,0,0,0 ;40-47
dw 0,0,0,0 ;48-4f
dw 0,0,0,0 ;50-57
dw 0,0,0,0 ;58-5f
dw 0,0,0,0 ;60-67
org rsp_bottom
dma rb 128
stack dw 0cccch,0cccch,0cccch
dw 0cccch,0cccch,0cccch
dw 0cccch,0cccch,0cccch
dw 0cccch,0cccch,0cccch
stack_top dw offset tmp ; code offset
dw unknown ; code seg
dw unknown ; init. flags
maxcmdlen equ 128
; the Read Console Buffer and the
; Cli Control Block share the same memory
read_buf rb 0
read_maxcmd db 128
clicb rb 0
clicb_net rb 0
read_blen rb 1
clicb_cmd rb maxcmdlen + 1
cmdsent db false
parseret dw 0
pcb dw offset savebuf
dw offset fcb
fcb rb 32
savebuf rb 128
;make sure hex is formed
db 0
end