mirror of
https://github.com/wwarthen/RomWBW.git
synced 2026-02-06 14:11:48 -06:00
41 lines
768 B
Plaintext
41 lines
768 B
Plaintext
TITLE IOINIT - FORTRAN-80 I/O FLAG & VARIABLE INIT
|
||
|
||
.8080
|
||
|
||
ENTRY $IOINI
|
||
EXT $IOFLG,$LNPTR,$CPMBF,$LUNTB
|
||
EXT $FLFLG,$DSKER,$OPNFL
|
||
|
||
$IOINI: LDA $IOFLG ;SEE IF WE'VE ALREADY BEEN CALLED
|
||
ORA A
|
||
RNZ
|
||
INR A ;SET NON-ZERO
|
||
STA $IOFLG
|
||
|
||
LXI H,$CPMBF
|
||
MVI M,132+1 ;MAX CHRS TO READ FOR BDOS CALL
|
||
INX H
|
||
MVI M,0 ;ZERO NO. OF CHARS READ
|
||
INX H
|
||
SHLD $LNPTR ;PTR TO BEGINNING OF LINE
|
||
|
||
MVI M,10 ;STORE LINE FEED AT BEG. OF LINE
|
||
|
||
LDA $LUNTB ;GET NO. OF LUN'S
|
||
DCR A
|
||
MOV B,A ;SAVE LOOP COUNT
|
||
LXI H,$FLFLG ;INITIALIZE FLAGS FOR DSKDRV
|
||
XRA A
|
||
|
||
FLGLOP: MOV M,A ;ZERO $FLFLG BYTE
|
||
INX H ;INCREMENT PTR
|
||
DCR B ;DECREMENT COUNT
|
||
JNZ FLGLOP ;NEXT
|
||
STA $DSKER
|
||
|
||
XRA A
|
||
STA $OPNFL ;CLEAR $OPNFL FOR LPTDRV
|
||
RET
|
||
|
||
END
|
||
|