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87 lines
1.4 KiB
Plaintext
87 lines
1.4 KiB
Plaintext
name scd1
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;
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; CP/M 3.0 MP/M-86 2.0 (BDOS version 3.0)
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; Interface for PLM-86 with separate code and data
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; Code org'd at 0
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; December 18, 1981
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dgroup group dats,stack
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cgroup group code
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assume cs:cgroup, ds:dgroup, ss:dgroup
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stack segment word stack 'STACK'
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stack_base label byte
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stack ends
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dats segment para public 'DATA' ;CP/M page 0 - LOC86'd at 0H
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org 4
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bdisk db ?
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org 6
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maxb dw ?
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org 50h
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cmdrv db ?
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pass0 dw ?
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len0 db ?
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pass1 dw ?
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len1 db ?
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org 5ch
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fcb db 16 dup (?)
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fcb16 db 16 dup (?)
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cr db ?
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rr dw ?
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ro db ?
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buff db 128 dup (?)
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tbuff equ buff
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public bdisk,maxb,cmdrv,pass0,len0
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public pass1,len1,fcb,fcb16,cr,rr
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public ro,buff,tbuff
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dats ends
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code segment public 'CODE'
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public reset,xdos,mon1,mon2,mon3,mon4
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extrn plm:near
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org 0h ; for separate code and data
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jmp reset
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db 'COPYRIGHT (c) 1983 by DIGITAL RESEARCH INC.'
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reset:
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pushf
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pop ax
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cli
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mov cx,ds
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mov ss,cx
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lea sp,stack_base
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push ax
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popf
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call plm
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xor cx,cx
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mov dx,cx
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int 224
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xdos proc
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push bp
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mov bp,sp
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mov dx,[bp+4]
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mov cx,[bp+6]
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int 224
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pop bp
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ret 4
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xdos endp
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mon1 equ xdos ; no returned value
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mon2 equ xdos ; returns byte in AL
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mon3 equ xdos ; returns address or word BX
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mon4 equ xdos ; returns pointer in BX and ES
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org 07fh ; reserve patch area
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db 0
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code ends
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end
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