mirror of
https://github.com/SEPPDROID/Digital-Research-Source-Code.git
synced 2025-10-25 17:34:06 +00:00
1 line
7.1 KiB
NASM
1 line
7.1 KiB
NASM
;4-15-77
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;DISK FORMAT PROGRAM TO WORK WITH THE FDC-3 DISK CONTROLLER
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;FORMATS DISKETTES TO WORK WITH VERSION 4.1 OF THE
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;CP/M OPERATING SYSTEM. EITHER SINGLE OR DOUBLE DENSITY CAN
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;BE FORMATTED. IF DOUBLE DENSITY IS SPECIFIED, TRACK 0 IS
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;IN SINGLE DENSITY AND THE REST ARE DOUBLE.
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;
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;SINCE THE FDC-3 IS USED WITH BOTH S100 AND
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;DSC-2 COMPUTER SYSTEMS, THE ASSEMBLY TIME SWITCH DSC2
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;MUST BE SET CORRECTLY
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TRUE EQU 0FFFFH
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FALSE EQU NOT TRUE
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;
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DSC2 EQU TRUE ;THIS SHOULD BE SET TO FALSE FOR S100 SYSTEMS
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;
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;DEFINE DISK PORTS
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;
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IF DSC2
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I127 EQU 80H
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I126 EQU 81H
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I125 EQU 82H
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I124 EQU 83H
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ENDIF
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;
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IF NOT DSC2
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I127 EQU 7FH
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I126 EQU 7EH
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I125 EQU 7DH
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I124 EQU 7CH
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ENDIF
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;
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;
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PORT EQU 4AH
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DENSITY EQU 4CH
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;
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ORG 100H
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LXI SP,2000H
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MONITOR EQU 0005H
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;FIGURE WHERE THE CBIOS JUMP TABLE IS FOR THIS SYSTEM
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LHLD 1
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MVI L,0
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SHLD JUMPTAB
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;
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;INITIALIZE DISKETTES
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;
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;SET UP DATA BUFFER OF E5
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LXI H,WRITEBUF
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MVI B,128D
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L0:
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MVI M,0E5H
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INX H
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DCR B
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JNZ L0
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;CHANGE ERROR LOCATION IN CBIOS TO THIS PROGRAM
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LHLD JUMPTAB
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LXI D,2EH
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DAD D
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LXI D,ERR
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MOV A,M ;SAVE OLD ERROR LOCATION
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STA OLDL
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MOV M,E
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INX H
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MOV A,M
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STA OLDH
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MOV M,D
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;SAVE OLD STATE OF DISK SELECT AND DENSITY
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LDA PORT
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STA SAVEPORT
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LDA DENSITY
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STA SAVEDENS
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MVI C,9 ;PRINT LOGON MESSAGE
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LXI D,MESS0
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CALL MONITOR
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AGAIN:
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;PRINT MESSAGE TO SELECT INITIALIZE ROM
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MVI C,9D ;MONITOR CALL TO PRINT BUFFER
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LXI D,MESS1
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CALL MONITOR
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;WAIT FOR ANSWER
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MVI C,01
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CALL MONITOR
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;CHECK FOR NO
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CPI 'N'
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JZ DONE
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CPI 06EH
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JZ DONE
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;NOW SELECT THE CORRECT DIRVE 8 ARE POSSIBLE
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DCR A
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ANI 07H
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MOV C,A
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;PUT INTO MESSAGE
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ORI 40H
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INR A
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STA DRV
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CALL SELDISK
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OK:
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;START WITH TRACK 0
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XRA A
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STA TRK
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MVI C,9D ;PRINT BUFFER CALL
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LXI D,MESS3 ;PROMPT TO SELECT DENSITY
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CALL MONITOR
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;WAIT FOR RESPONSE
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MVI C,01
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CALL MONITOR
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CPI 'S'
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JZ FILL0
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CPI 'D'
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JNZ OK ;DO NOT ASSUME ANYTHING
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FILL0:
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;SET UP SINGLE DENSITY
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STA DENS
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;SET UP DENSITY SELECTS IN LOW MEMORY
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XRA A
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STA DENSITY ;DENSITY
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LDA PORT
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ANI 0F7H
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STA PORT
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;SET UP PROPER ADDRESS MARKS FOR INITIALIZING
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MVI A,0FEH
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STA ID
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MVI A,0FCH
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STA INDEXAM
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MVI A,0C0H
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STA FINISH ;TRACK FINISHED
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MVI A,0E0H
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STA ECODE
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;SET UP CORRECT TABLE FOR USE IN WRITING THE E5 DATA PATTERN
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LXI H,SINTAB
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SHLD E5TABLE
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;SET UP CORRECT TABLE FOR WRITING THE ID FIELDS
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LXI B,SINTAB
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MVI A,26D
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CALL FILL
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JMP OK8
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FILL:
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STA SECTORS
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;NOW MAKE A IMAGE OF THE TRACK
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LXI H,BUFFER
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PUSH B
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MOV C,A ;NUMBER OF SECTORS
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LOOP:
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MVI B,6 ;6 BYTES PER SECTOR
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LXI D,ID
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LOOP1:
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LDAX D
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MOV M,A
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INX H
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INX D
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DCR B
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JNZ LOOP1
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DCR C
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JNZ LOOP
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;NOW BUFFER +3 AND EVERY 6 BYTES ARE SECTOR #
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;FILL IN SECTOR NUMBERS
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POP B ;ADDRESS OF TABLE OF SECTOR NUMBERS
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CALL FILSECT
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JMP FINCODE
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FILSECT:
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LXI H,BUFFER+3
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LXI D,6
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LOOP3:
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LDAX B
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CPI 0FFH
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RZ
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MOV M,A
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INX B
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DAD D
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JMP LOOP3
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;NOW PUT FINNISH CODE AT THE LAST WORD
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FINCODE:
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DCX H
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DCX H
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DCX H
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DCX H
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LDA FINISH
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MOV M,A
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RET
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OK8:
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;PRINT MESSAGE TO PUT IN CORRECT DISKETTE
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LXI D,MESS2
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MVI C,9
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CALL MONITOR
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MVI C,1 ;WAIT FOR REPLY
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CALL MONITOR
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;ENABLE FORMATTING
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LDA PORT
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ANI 0BFH
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XRI 40H
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STA PORT
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;HOME THE DISK
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LHLD JUMPTAB
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LXI D,18H
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DAD D
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CALL SYST
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;NOW GO AHEAD AND INITIALIZE
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;
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INIT:
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;SET UP TRACK EROR COUNTER
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XRA A
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STA ERRORS
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;;
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INITIAL:
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;DELAY 200 MILLISEC
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LXI B,8000H
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L6:
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DCR C
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JNZ L6
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DCR B
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JNZ L6
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;HERE WE GO - TURN MICROCODE ON
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;
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LXI H,INDEXAM
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MOV A,H
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;
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IF NOT DSC2
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CMA
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ENDIF
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;
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OUT I126 ;SET DMA ADDRESS OM FCD
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MOV A,L
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;
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IF NOT DSC2
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CMA
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ENDIF
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;
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OUT I125 ;POINTS TO INDEX AM
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MVI A,0A0H ;SELECT INITIALIZATION CODE AND WRITE DATA
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;
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IF NOT DSC2
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CMA
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ENDIF
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;
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OUT I127
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WW: IN I127
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ANI 88H ;WAIT FOR IO FINISH
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JZ WW
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IN I127 ;CHECK FOR ERROR
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ANI 0F0H
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JZ FILTRK
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LXI D,FORMATERR
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JMP ERR1
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;
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;INCREMENT TRACK, STEP
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;
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FILTRK:
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;NOW WRITE THA DATA PATTERN OF E5 IN EACH SECTOR
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LXI B,WRITEBUF
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CALL SETDMA
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;THIS IS TABLE DRIVEN TO SPEED IT UP
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;USE SINTAB FOR SD TRACKS
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;USE TABLE4 FOR DD TRACKS
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LHLD E5TABLE
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F6:
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PUSH H
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MOV C,M
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CALL SETSEC
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CALL WRITE
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POP H
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INX H
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MVI A,0FFH
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CMP M
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JNZ F6 ;MORE SECTORS TO GO
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NEXTRK: LDA TRK
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INR A
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STA TRK
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CPI 1
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JZ CHECKDENS
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CPI 2
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JZ NEWSECT
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CPI 77
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JNZ DOSTP
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JMP AGAIN ;DO ANOTHER
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CHECKDENS:
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LDA DENS
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CPI 'D'
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JNZ DOSTP
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;TIME TO CHANGE DENSTIY
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LDA PORT
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ANI 0F7H
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ORI 08H
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STA PORT
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MVI A,0FFH
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STA DENSITY
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MVI A,0EH
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STA ID ;ID ADDRESS MARK
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MVI A,0CH
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STA INDEXAM
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XRA A
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STA FINISH
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INR A
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STA ECODE ;SECTOOR FINISH CODE
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LXI H,TABLE4
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SHLD E5TABLE
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LXI B,DOBTAB
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MVI A,58D ;NUMBER OF SECTORS
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CALL FILL
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JMP DOSTP
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NEWSECT:
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;FOR OPTIMAL CPPM ACCESS, THE CPM TRACKS MUST BE INITIALIZED
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;DIFFERENTLY
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LDA SECTORS
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CPI 26D
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JZ DOSTP ;ONLY NECESSARY FOR DD
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;FOR DD THE LOGIACAL SECTORS ARE EVERY 13TH PHYSICAL SECTOR
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LXI B,TABLE2
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CALL FILSECT
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DOSTP:
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;FIGURE ADDRESS OF SEEK
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LHLD JUMPTAB
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LXI D,01EH
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DAD D
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LDA TRK
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MOV C,A ;SEND PARAMETER IN C
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CALL SYST
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;FILL IN NEW TRACK BYTES
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LXI H,BUFFER+1
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LXI D,006
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LDA SECTORS
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MOV C,A
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LDA TRK
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LOOP5:
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MOV M,A
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DAD D
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DCR C
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JNZ LOOP5
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JMP INIT
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DONE:
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LXI D,MESS4
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MVI C,09
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CALL MONITOR
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MVI C,01
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CALL MONITOR
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JMP REBOOT
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SELDISK:
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LXI D,01BH
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LHLD JUMPTAB
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DAD D
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JMP SYST
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SETDMA:
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LXI D,24H
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LHLD JUMPTAB
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DAD D
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JMP SYST
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SETSEC:
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LXI D,21H
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LHLD JUMPTAB
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DAD D
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JMP SYST
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WRITE:
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LXI D,2AH
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LHLD JUMPTAB
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DAD D
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JMP SYST
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ERR:
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POP H ;GET RID OF STACK RETURN
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LXI D,WRITERR
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ERR1:
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MVI C,9
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CALL MONITOR
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LDA ERRORS
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INR A
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CPI 10
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STA ERRORS
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JNZ INITIAL
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LXI D,GIVEUP
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MVI C,9
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CALL MONITOR
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REBOOT:
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;RESTORE CBIOS JUMP TO ERROR RECOVERY
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LHLD JUMPTAB
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LXI D,2EH
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DAD D
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LDA OLDL
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MOV M,A
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INX H
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LDA OLDH
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MOV M,A
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WARMBT:
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; FIND OLD PORT INFO AND DISABLE FORMATTING
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LDA SAVEPORT
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STA PORT
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;RESTORE DENSITY
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LDA SAVEDENS
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STA DENSITY
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JMP 0000
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SYST:
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PCHL ;GO TO CBIOS
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OLDL: DB 0
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OLDH: DB 0
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DENS: DB 0
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SAVEPORT: DB 0
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SAVEDENS: DB 0
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JUMPTAB: DW 0000
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E5TABLE: DW 0000
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ERRORS: DB 0
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SECTORS: DB 0
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ID: DB 0
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TRK: DB 0
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DB 0
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SECT: DB 0
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DB 0
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ECODE: DB 01
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FINISH: DB 0
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MESS0: DW 0D0AH
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IF DSC2
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DB 'DISKETTE FORMAT PROGRAM VERSION DSC4.1$'
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ENDIF
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;
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IF NOT DSC2
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DB 'DISKETTE FORMAT PROGRAM VERSION 4.1$'
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ENDIF
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;
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MESS1: DW 0D0AH
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DB 'WHICH DRIVE DO YOU WANT TO FORMAT? $'
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MESS2: DW 0D0AH
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DB 'PUT DISKETTE TO BE INITIALIZED IN DRIVE '
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DRV: DB 0
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DB '$'
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MESS3: DW 0D0AH
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DB 'SINGLE OR DOUBLE DENSITY $'
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MESS4: DW 0D0AH
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DB 'REBOOTING $'
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FORMATERR:DW 0D0AH
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DB 'HAVING TROUBLE FORMATING $'
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WRITERR:DW 0D0AH
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DB 'HAVING TROUBLE WRITING $'
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GIVEUP: DW 0D0AH
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DB 'CAN NOT DO IT $'
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SINTAB: DB 1,2,3,4
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DB 5,6,7,8
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DB 9,10,11,12
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DB 13,14,15,16
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DB 17,18,19,20
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DB 21,22,23,24
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DB 25,26
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DB 0FFH
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DOBTAB: DB 1,30,2,31
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DB 3,32,4,33
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DB 5,34,6,35
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DB 7,36,8,37
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DB 9,38,10,39
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DB 11,40,12,41
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DB 13,42,14,43
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DB 15,44,16,45
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DB 17,46,18,47
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DB 19,48,20,49
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DB 21,50,22,51
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DB 23,52,24,53
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DB 25,54,26,55
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DB 27,56,28,57
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DB 29,58
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DB 0FFH
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TABLE2: DB 1,10,19,28
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DB 37,46,55,6
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DB 15,24,33,42
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DB 51,2,11,20
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DB 29,38,47,56
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DB 7,16,25,34
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DB 43,52,3,12
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DB 21,30,39,48
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DB 57,8,17,26
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DB 35,44,53,4
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DB 13,22,31,40
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DB 49,58,9,18
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DB 27,36,45,54
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DB 5,14,23,32
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DB 41,50
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DB 0FFH
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TABLE4: DB 1,19,37,55
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DB 15,33,51,11
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DB 29,47,7,25
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DB 43,3,21,39
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DB 57,17,35,53
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DB 13,31,49,9
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DB 27,45,5,23
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DB 41,10,28,46
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DB 6,24,42,2
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DB 20,38,56,16
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DB 34,52,12,30
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DB 48,8,26,44
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DB 4,22,40,58
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DB 18,36,54,14
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DB 32,50
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DB 0FFH
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WRITEBUF: DS 128D
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INDEXAM: DB 0
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BUFFER: DS 360D
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END
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