; Retro UNIX 386 v1.2 Kernel (v0.2.2.3) - DISKBSS.INC ; Last Modification: 12/07/2022 ; ***************************************************************************** ; (Initialized Disk Parameters Data section for 'DISKIO.INC') ; ***************************************************************************** ; Ref: Retro UNIX 386 v1 Kernel (v0.2.1.5) - DISKDATA.INC - 11/07/2022 ;---------------------------------------- ; 80286 INTERRUPT LOCATIONS : ; REFERENCED BY POST & BIOS : ;---------------------------------------- DISK_POINTER: dd MD_TBL6 ; Pointer to Diskette Parameter Table ; IBM PC-XT Model 286 source code ORGS.ASM (06/10/85) - 14/12/2014 ;---------------------------------------------------------------- ; DISK_BASE : ; THIS IS THE SET OF PARAMETERS REQUIRED FOR : ; DISKETTE OPERATION. THEY ARE POINTED AT BY THE : ; DATA VARIABLE @DISK_POINTER. TO MODIFY THE PARAMETERS, : ; BUILD ANOTHER PARAMETER BLOCK AND POINT AT IT : ;---------------------------------------------------------------- ;DISK_BASE: ; DB 11011111B ; SRT=D, HD UNLOAD=0F - 1ST SPECIFY BYTE ; DB 2 ; HD LOAD=1, MODE=DMA - 2ND SPECIFY BYTE ; DB MOTOR_WAIT ; WAIT TIME AFTER OPERATION TILL MOTOR OFF ; DB 2 ; 512 BYTES/SECTOR ; ;DB 15 ; EOT (LAST SECTOR ON TRACK) ; db 18 ; (EOT for 1.44MB diskette) ; DB 01BH ; GAP LENGTH ; DB 0FFH ; DTL ; ;DB 054H ; GAP LENGTH FOR FORMAT ; db 06ch ; (for 1.44MB dsikette) ; DB 0F6H ; FILL BYTE FOR FORMAT ; DB 15 ; HEAD SETTLE TIME (MILLISECONDS) ; DB 8 ; MOTOR START TIME (1/8 SECONDS) ;---------------------------------------- ; ROM BIOS DATA AREAS : ;---------------------------------------- ;DATA SEGMENT AT 40H ; ADDRESS= 0040:0000 ;@EQUIP_FLAG DW ? ; INSTALLED HARDWARE FLAGS ;---------------------------------------- ; DISKETTE DATA AREAS : ;---------------------------------------- ;@SEEK_STATUS DB ? ; DRIVE RECALIBRATION STATUS ; ; BIT 3-0 = DRIVE 3-0 RECALIBRATION ; ; BEFORE NEXT SEEK IF BIT IS = 0 ;@MOTOR_STATUS DB ? ; MOTOR STATUS ; ; BIT 3-0 = DRIVE 3-0 CURRENTLY RUNNING ; ; BIT 7 = CURRENT OPERATION IS A WRITE ;@MOTOR_COUNT DB ? ; TIME OUT COUNTER FOR MOTOR(S) TURN OFF ;@DSKETTE_STATUS DB ? ; RETURN CODE STATUS BYTE ; ; CMD_BLOCK IN STACK FOR DISK OPERATION ;@NEC_STATUS DB 7 DUP(?) ; STATUS BYTES FROM DISKETTE OPERATION ;---------------------------------------- ; POST AND BIOS WORK DATA AREA : ;---------------------------------------- ;@INTR_FLAG DB ? ; FLAG INDICATING AN INTERRUPT HAPPENED ;---------------------------------------- ; TIMER DATA AREA : ;---------------------------------------- ; 17/12/2014 (IRQ 0 - INT 08H) ;TIMER_LOW equ 46Ch ; Timer ticks (counter) @ 40h:006Ch ;TIMER_HIGH equ 46Eh ; (18.2 timer ticks per second) ;TIMER_OFL equ 470h ; Timer - 24 hours flag @ 40h:0070h ;---------------------------------------- ; ADDITIONAL MEDIA DATA : ;---------------------------------------- ;@LASTRATE DB ? ; LAST DISKETTE DATA RATE SELECTED ;@DSK_STATE DB ? ; DRIVE 0 MEDIA STATE ; DB ? ; DRIVE 1 MEDIA STATE ; DB ? ; DRIVE 0 OPERATION START STATE ; DB ? ; DRIVE 1 OPERATION START STATE ;@DSK_TRK DB ? ; DRIVE 0 PRESENT CYLINDER ; DB ? ; DRIVE 1 PRESENT CYLINDER ;DATA ENDS ; END OF BIOS DATA SEGMENT ;-------------------------------------------------------- ; DRIVE TYPE TABLE : ;-------------------------------------------------------- ; 16/02/2015 (unix386.s, 32 bit modifications) DR_TYPE: DB 01 ;DRIVE TYPE, MEDIA TABLE ;DW MD_TBL1 dd MD_TBL1 DB 02+BIT7ON ;DW MD_TBL2 dd MD_TBL2 DR_DEFAULT: DB 02 ;DW MD_TBL3 dd MD_TBL3 DB 03 ;DW MD_TBL4 dd MD_TBL4 DB 04+BIT7ON ;DW MD_TBL5 dd MD_TBL5 DB 04 ;DW MD_TBL6 dd MD_TBL6 DR_TYPE_E equ $ ; END OF TABLE ;DR_CNT EQU (DR_TYPE_E-DR_TYPE)/3 DR_CNT equ (DR_TYPE_E-DR_TYPE)/5 ;-------------------------------------------------------- ; MEDIA/DRIVE PARAMETER TABLES : ;-------------------------------------------------------- ;-------------------------------------------------------- ; 360 KB MEDIA IN 360 KB DRIVE : ;-------------------------------------------------------- MD_TBL1: DB 11011111B ; SRT=D, HD UNLOAD=0F - 1ST SPECIFY BYTE DB 2 ; HD LOAD=1, MODE=DMA - 2ND SPECIFY BYTE DB MOTOR_WAIT ; WAIT TIME AFTER OPERATION TILL MOTOR OFF DB 2 ; 512 BYTES/SECTOR DB 09 ; EOT (LAST SECTOR ON TRACK) DB 02AH ; GAP LENGTH DB 0FFH ; DTL DB 050H ; GAP LENGTH FOR FORMAT DB 0F6H ; FILL BYTE FOR FORMAT DB 15 ; HEAD SETTLE TIME (MILLISECONDS) DB 8 ; MOTOR START TIME (1/8 SECONDS) DB 39 ; MAX. TRACK NUMBER DB RATE_250 ; DATA TRANSFER RATE ;-------------------------------------------------------- ; 360 KB MEDIA IN 1.2 MB DRIVE : ;-------------------------------------------------------- MD_TBL2: DB 11011111B ; SRT=D, HD UNLOAD=0F - 1ST SPECIFY BYTE DB 2 ; HD LOAD=1, MODE=DMA - 2ND SPECIFY BYTE DB MOTOR_WAIT ; WAIT TIME AFTER OPERATION TILL MOTOR OFF DB 2 ; 512 BYTES/SECTOR DB 09 ; EOT (LAST SECTOR ON TRACK) DB 02AH ; GAP LENGTH DB 0FFH ; DTL DB 050H ; GAP LENGTH FOR FORMAT DB 0F6H ; FILL BYTE FOR FORMAT DB 15 ; HEAD SETTLE TIME (MILLISECONDS) DB 8 ; MOTOR START TIME (1/8 SECONDS) DB 39 ; MAX. TRACK NUMBER DB RATE_300 ; DATA TRANSFER RATE ;-------------------------------------------------------- ; 1.2 MB MEDIA IN 1.2 MB DRIVE : ;-------------------------------------------------------- MD_TBL3: DB 11011111B ; SRT=D, HD UNLOAD=0F - 1ST SPECIFY BYTE DB 2 ; HD LOAD=1, MODE=DMA - 2ND SPECIFY BYTE DB MOTOR_WAIT ; WAIT TIME AFTER OPERATION TILL MOTOR OFF DB 2 ; 512 BYTES/SECTOR DB 15 ; EOT (LAST SECTOR ON TRACK) DB 01BH ; GAP LENGTH DB 0FFH ; DTL DB 054H ; GAP LENGTH FOR FORMAT DB 0F6H ; FILL BYTE FOR FORMAT DB 15 ; HEAD SETTLE TIME (MILLISECONDS) DB 8 ; MOTOR START TIME (1/8 SECONDS) DB 79 ; MAX. TRACK NUMBER DB RATE_500 ; DATA TRANSFER RATE ;-------------------------------------------------------- ; 720 KB MEDIA IN 720 KB DRIVE : ;-------------------------------------------------------- MD_TBL4: DB 11011111B ; SRT=D, HD UNLOAD=0F - 1ST SPECIFY BYTE DB 2 ; HD LOAD=1, MODE=DMA - 2ND SPECIFY BYTE DB MOTOR_WAIT ; WAIT TIME AFTER OPERATION TILL MOTOR OFF DB 2 ; 512 BYTES/SECTOR DB 09 ; EOT (LAST SECTOR ON TRACK) DB 02AH ; GAP LENGTH DB 0FFH ; DTL DB 050H ; GAP LENGTH FOR FORMAT DB 0F6H ; FILL BYTE FOR FORMAT DB 15 ; HEAD SETTLE TIME (MILLISECONDS) DB 8 ; MOTOR START TIME (1/8 SECONDS) DB 79 ; MAX. TRACK NUMBER DB RATE_250 ; DATA TRANSFER RATE ;-------------------------------------------------------- ; 720 KB MEDIA IN 1.44 MB DRIVE : ;-------------------------------------------------------- MD_TBL5: DB 11011111B ; SRT=D, HD UNLOAD=0F - 1ST SPECIFY BYTE DB 2 ; HD LOAD=1, MODE=DMA - 2ND SPECIFY BYTE DB MOTOR_WAIT ; WAIT TIME AFTER OPERATION TILL MOTOR OFF DB 2 ; 512 BYTES/SECTOR DB 09 ; EOT (LAST SECTOR ON TRACK) DB 02AH ; GAP LENGTH DB 0FFH ; DTL DB 050H ; GAP LENGTH FOR FORMAT DB 0F6H ; FILL BYTE FOR FORMAT DB 15 ; HEAD SETTLE TIME (MILLISECONDS) DB 8 ; MOTOR START TIME (1/8 SECONDS) DB 79 ; MAX. TRACK NUMBER DB RATE_250 ; DATA TRANSFER RATE ;-------------------------------------------------------- ; 1.44 MB MEDIA IN 1.44 MB DRIVE : ;-------------------------------------------------------- MD_TBL6: DB 10101111B ; SRT=A, HD UNLOAD=0F - 1ST SPECIFY BYTE DB 2 ; HD LOAD=1, MODE=DMA - 2ND SPECIFY BYTE DB MOTOR_WAIT ; WAIT TIME AFTER OPERATION TILL MOTOR OFF DB 2 ; 512 BYTES/SECTOR DB 18 ; EOT (LAST SECTOR ON TRACK) DB 01BH ; GAP LENGTH DB 0FFH ; DTL DB 06CH ; GAP LENGTH FOR FORMAT DB 0F6H ; FILL BYTE FOR FORMAT DB 15 ; HEAD SETTLE TIME (MILLISECONDS) DB 8 ; MOTOR START TIME (1/8 SECONDS) DB 79 ; MAX. TRACK NUMBER DB RATE_500 ; DATA TRANSFER RATE ; << diskette.inc >> ; +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ; ;---------------------------------------- ; ROM BIOS DATA AREAS : ;---------------------------------------- ;DATA SEGMENT AT 40H ; ADDRESS= 0040:0000 ;---------------------------------------- ; FIXED DISK DATA AREAS : ;---------------------------------------- ;DISK_STATUS1: DB 0 ; FIXED DISK STATUS ;HF_NUM: DB 0 ; COUNT OF FIXED DISK DRIVES ;CONTROL_BYTE: DB 0 ; HEAD CONTROL BYTE ;@PORT_OFF DB ? ; RESERVED (PORT OFFSET) ;---------------------------------------- ; ADDITIONAL MEDIA DATA : ;---------------------------------------- ;@LASTRATE DB ? ; LAST DISKETTE DATA RATE SELECTED ;HF_STATUS DB 0 ; STATUS REGISTER ;HF_ERROR DB 0 ; ERROR REGISTER ;HF_INT_FLAG DB 0 ; FIXED DISK INTERRUPT FLAG ;HF_CNTRL DB 0 ; COMBO FIXED DISK/DISKETTE CARD BIT 0=1 ;@DSK_STATE DB ? ; DRIVE 0 MEDIA STATE ; DB ? ; DRIVE 1 MEDIA STATE ; DB ? ; DRIVE 0 OPERATION START STATE ; DB ? ; DRIVE 1 OPERATION START STATE ;@DSK_TRK DB ? ; DRIVE 0 PRESENT CYLINDER ; DB ? ; DRIVE 1 PRESENT CYLINDER ;DATA ENDS ; END OF BIOS DATA SEGMENT ; ; +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ERR_TBL: db NO_ERR db BAD_ADDR_MARK,BAD_SEEK,BAD_CMD,UNDEF_ERR db RECORD_NOT_FND,UNDEF_ERR,BAD_ECC,BAD_SECTOR ; 11/07/2022 ; 17/12/2014 (mov ax, [cfd]) ; 11/12/2014 ;cfd: db 0 ; current floppy drive (for GET_PARM) ; 17/12/2014 ; instead of 'DISK_POINTER' ;pfd: db 1 ; previous floppy drive (for GET_PARM) ; (initial value of 'pfd ; must be different then 'cfd' value ; to force updating/initializing ; current drive parameters) ;; 11/07/2022 - Retro UNIX 386 v1.1 (Kernel v0.2.1.5) pfd: db 0FFh align 2 HF_PORT: dw 1F0h ; Default = 1F0h ; (170h) HF_REG_PORT: dw 3F6h ; HF_PORT + 206h ; 05/01/2015 hf_m_s: db 0 ; (0 = Master, 1 = Slave) ; *****************************************************************************