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dilbert57 |
Assembler release DWC_2.0 version 2.11
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May 6, 2004 (c) Motorola (free ware)
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0001 *
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0002 ** FLEX 9 COMPACT FLASH FORMAT PROGRAM
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0003 *
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0004 * FOR B5-X300 and CF with 8 Bit Transfer interface
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0005 *
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0006 *
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0007 0001 CFLAG EQU $01 CARRY FLAG
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0008 0002 VFLAG EQU $02 OVERFLOW FLAG
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0009 0004 ZFLAG EQU $04 ZERO FLAG
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0010 0008 NFLAG EQU $08 NEGATIVE FLAG
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0011 0010 IFLAG EQU $10 IRQ MASK CC
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0012 0020 HFLAG EQU $20 HALF CARRY
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0013 0040 FFLAG EQU $40 FIRQ MASK CC
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0014 0080 EFLAG EQU $80 ENTIRE FLAG
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0015 *
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0016 0000 MAPPAG EQU $00 PAGE $0000 DAT ADDRESS
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0017 *
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0018 * Serial Port
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0019 *
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0020 E000 ACIAS EQU $E000
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0021 E000 ACIAC1 EQU ACIAS
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0022 E001 ACIAD1 EQU ACIAS+1
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0023 04E2 DELCON EQU 1250 Delay (Processor clock in MHz * 50)
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0024 *
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0025 * XMODEM Control characters
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0026 *
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0027 0001 SOH EQU $01
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0028 0004 EOT EQU $04
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0029 0006 ACK EQU $06
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0030 0015 NAK EQU $15
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0031 0018 CAN EQU $18
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0032 *
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0033 * Some dummy Constants
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0034 *
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0035 0040 RMAXTRK EQU 64
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0036 00FF RMAXSEC EQU 255
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0037 3EC1 RTOTSEC EQU RMAXTRK*RMAXSEC-RMAXSEC
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0038 *
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0039 * Start
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0040 *
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0041 0100 ORG $0100
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0042 0100 17 02 9E START LBSR UFSUB
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0043 0103 6E 9F F8 00 JMP [$F800] Jump to monitor on Completion.
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0044 *
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0045 *
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0046 * RAM SPACE
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0047 *
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0048 0107 00 DRVNUM FCB 0
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0049 0108 00 TRACK FCB 0
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0050 0109 00 SECTOR FCB 0
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0051 010A 00 CHKSUM FCB 0
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0052 010B 00 BLKNUM FCB 0 Xmodem block number
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0053 010C 00 BYTCNT FCB 0 Xmodem byte count
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0054 010D 00 00 XSTATE FDB 0 Xmodem State Vector
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0055 010F 00 00 00 DELCNT FCB $00,$00,$00 Xmodem Poll timer
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0056 0112 00 MAXTRK FCB 0
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0057 0113 00 MAXSEC FCB 0
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0058 0200 ORG $0200
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0059 *
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0060 * SECTOR BUFFER
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0061 *
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0062 0200 BUFFER RMB 256
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0063 *
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0064 *
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0065 * recieve char from remote drive.
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0066 * timeout if no response for approx 1s.
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0067 * Entry: no parameters
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0068 * Exit: (A) = recieved char, (C)=1 if valid char, (C)=0 if timeout.
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0069 *
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0070 0300 34 30 RCHAR PSHS X,Y
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0071 *
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0072 0302 8E 03 E8 LDX #1000 1000x inner loop
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0073 0305 10 8E 04 E2 RCHAR1 LDY #DELCON delay constant for inner loop (approx 1ms).
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0074 0309 B6 E0 00 RCHAR2 LDA ACIAC1 test for recieved char
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0075 030C 47 ASRA
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0076 030D 25 0A BCS RCHAR3 get character
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0077 030F 31 3F LEAY -1,Y else, continue to count delay
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0078 0311 26 F6 BNE RCHAR2
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0079 0313 30 1F LEAX -1,X
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0080 0315 26 EE BNE RCHAR1
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0081 0317 35 B0 PULS X,Y,PC return with error if timed out
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0082 *
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0083 0319 B6 E0 01 RCHAR3 LDA ACIAD1 return data (carry bit still set)
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0084 031C 35 B0 PULS X,Y,PC
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0085 *
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0086 *
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0087 * transmit char to remote drive.
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0088 * timeout if no response for approx 1s. (allows for use of hardware flow control)
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0089 * Entry: (A) = char to transmit
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0090 * Exit: (A) = recieved char, (C)=1 if valid char, (C)=0 if timeout.
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0091 *
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0092 031E 34 30 SCHAR PSHS X,Y
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0093 0320 34 02 PSHS A
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0094 *
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0095 0322 8E 03 E8 LDX #1000 1000x inner loop
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0096 0325 10 8E 04 E2 SCHAR1 LDY #DELCON delay constant for inner loop (approx 1ms).
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0097 0329 B6 E0 00 SCHAR2 LDA ACIAC1 test for space in transmit FIFO
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0098 032C 47 ASRA
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0099 032D 47 ASRA
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0100 032E 25 0C BCS SCHAR3 send character
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0101 0330 31 3F LEAY -1,Y else, continue to count delay
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0102 0332 26 F5 BNE SCHAR2
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0103 0334 30 1F LEAX -1,X
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0104 0336 26 ED BNE SCHAR1
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0105 0338 35 02 PULS A
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0106 033A 35 B0 PULS X,Y,PC return with error if timed out
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0107 *
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0108 033C 35 02 SCHAR3 PULS A
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0109 033E B7 E0 01 STA ACIAD1 send data (carry bit still set)
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0110 0341 35 B0 PULS X,Y,PC
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0111 *
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0112 * Print Data
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0113 *
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0114 0343 8D D9 PDATA0 BSR SCHAR
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0115 0345 A6 80 PDATA1 LDA ,X+
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0116 0347 81 04 CMPA #$04
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0117 0349 26 F8 BNE PDATA0
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0118 034B 39 RTS
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0119 *
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0120 ** 'UF' Format RAMdisc to FLEX standard.
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0121 *
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0122 034C 0A 0D DISFOS FCB $0A,$0D
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0123 034E 46 6F 72 6D 61 74 FCC 'Formating RAMdisk... '
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69 6E 67 20 52 41
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4D 64 69 73 6B 2E
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2E 2E 20
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0124 0363 0A 0D FCB $0A,$0D
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0125 0365 44 72 69 76 65 20 FCC 'Drive Number ?'
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4E 75 6D 62 65 72
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20 3F
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0126 0373 04 FCB 4
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0127 0374 0A 0D 04 MESS6 FCB $0A,$0D,4
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0128 0377 52 61 6D 64 69 73 FCC 'Ramdisk not allocated! '
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6B 20 6E 6F 74 20
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61 6C 6C 6F 63 61
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74 65 64 21 20
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0129 038E 04 FCB 4
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0130 038F 0A 0D UFMSG1 FCB $0A,$0D
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0131 0391 46 6F 72 6D 61 74 FCC 'Format Complete'
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20 43 6F 6D 70 6C
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65 74 65
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0132 03A0 04 FCB 4
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0133 *
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0134 03A1 BD 04 B1 UFSUB JSR INITDR
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0135 03A4 8E 03 4C LDX #DISFOS
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0136 03A7 BD 03 45 JSR PDATA1
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0137 03AA 17 FF 53 UFSUB1 LBSR RCHAR
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0138 03AD 24 FB BCC UFSUB1
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0139 03AF 17 FF 6C LBSR SCHAR
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0140 03B2 81 30 CMPA #'0'
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0141 03B4 10 25 00 F3 LBLO UFEXIT
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0142 03B8 81 33 CMPA #'3'
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0143 03BA 10 22 00 ED LBHI UFEXIT
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0144 03BE 80 30 SUBA #'0'
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0145 03C0 1F 89 TFR A,B
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0146 03C2 F7 01 07 STB DRVNUM
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0147 03C5 8E 01 04 LDX #DRVNUM-3
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0148 03C8 BD 05 22 JSR DRVSEL
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0149 *
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0150 * set up free chain
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0151 *
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0152 03CB 8E 02 00 LDX #BUFFER clear out buffer
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0153 03CE 4F CLRA
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0154 03CF 5F CLRB
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0155 03D0 A7 80 DFL1 STA 0,X+
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0156 03D2 5A DECB
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0157 03D3 26 FB BNE DFL1
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0158 *
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0159 03D5 7F 01 08 CLR TRACK
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0160 03D8 86 01 LDA #1
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0161 03DA B7 01 09 STA SECTOR
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0162 03DD 8E 02 00 DFL2 LDX #BUFFER
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0163 03E0 B6 01 08 LDA TRACK
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0164 03E3 A7 84 STA 0,X
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0165 03E5 B6 01 09 LDA SECTOR
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0166 03E8 4C INCA
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0167 03E9 81 00 CMPA #RMAXSEC+1 last sector on track?
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0168 03EB 26 04 BNE DFL3
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0169 03ED 6C 84 INC 0,X
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0170 03EF 86 01 LDA #1
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0171 03F1 A7 01 DFL3 STA 1,X
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0172 03F3 B6 01 08 LDA TRACK
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0173 03F6 F6 01 09 LDB SECTOR
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0174 03F9 BD 04 FE JSR WRITSC
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0175 03FC 7C 01 09 INC SECTOR
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0176 03FF B6 01 09 LDA SECTOR
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0177 0402 81 00 CMPA #RMAXSEC+1
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0178 0404 26 D7 BNE DFL2
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0179 0406 86 01 LDA #1
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0180 0408 B7 01 09 STA SECTOR
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0181 040B 7C 01 08 INC TRACK
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0182 040E B6 01 08 LDA TRACK
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0183 0411 81 40 CMPA #RMAXTRK
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0184 0413 26 C8 BNE DFL2
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0185 * break free chain at last track/sector
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0186 0415 8E 02 00 LDX #BUFFER
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0187 0418 86 3F LDA #RMAXTRK-1
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0188 041A C6 FF LDB #RMAXSEC
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0189 041C BD 04 DD JSR READSC
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0190 041F 8E 02 00 LDX #BUFFER
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0191 0422 6F 84 CLR 0,X
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0192 0424 6F 01 CLR 1,X
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0193 0426 86 3F LDA #RMAXTRK-1
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0194 0428 C6 FF LDB #RMAXSEC
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0195 042A BD 04 FE JSR WRITSC
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0196 * set up sector structure, SIR, directory etc
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0197 042D 8E 02 00 LDX #BUFFER
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0198 0430 4F CLRA
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0199 0431 C6 FF LDB #RMAXSEC
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0200 0433 BD 04 DD JSR READSC
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0201 0436 8E 02 00 LDX #BUFFER
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0202 0439 6F 84 CLR 0,X break end of directory chain
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0203 043B 6F 01 CLR 1,X
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0204 043D 4F CLRA
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0205 043E C6 FF LDB #RMAXSEC
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0206 0440 BD 04 FE JSR WRITSC
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0207 *
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0208 0443 8E 02 00 LDX #BUFFER
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0209 0446 4F CLRA
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0210 0447 C6 03 LDB #3 set up SIR
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0211 0449 BD 04 DD JSR READSC
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0212 044C 8E 02 00 LDX #BUFFER
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0213 044F 6F 84 CLR 0,X break forward link
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0214 0451 6F 01 CLR 1,X
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0215 0453 CC 52 41 LDD #$5241 set volume name (RAMDISK )
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0216 0456 ED 88 10 STD 16,X
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0217 0459 CC 4D 44 LDD #$4D44
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0218 045C ED 88 12 STD 18,X
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0219 045F CC 49 53 LDD #$4953
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0220 0462 ED 88 14 STD 20,X
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0221 0465 CC 4B 20 LDD #$4B20
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0222 0468 ED 88 16 STD 22,X
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0223 046B CC 00 01 LDD #1 volume number
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0224 046E ED 88 1B STD 27,X
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0225 0471 CC 01 01 LDD #$0101 first trk/sec 01-01
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0226 0474 ED 88 1D STD 29,X
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0227 0477 86 3F LDA #RMAXTRK-1
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0228 0479 C6 FF LDB #RMAXSEC
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0229 047B ED 88 1F STD 31,X
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0230 047E ED 88 26 STD 38,X
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0231 0481 CC 3E C1 LDD #RTOTSEC total DATA sectors (2912-14)
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0232 0484 ED 88 21 STD 33,X
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0233 *
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| 246 |
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0234 0487 86 01 LDA #01 month set default creation date (SYS09's birthday!)
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0235 0489 A7 88 23 STA 35,X
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0236 048C 86 07 LDA #07 day
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| 249 |
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0237 048E A7 88 24 STA 36,X
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0238 0491 86 07 LDA #07 year
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| 251 |
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0239 0493 A7 88 25 STA 37,X
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| 252 |
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0240 *
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| 253 |
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0241 0496 4F RF3 CLRA
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| 254 |
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0242 0497 C6 03 LDB #3
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| 255 |
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0243 0499 BD 04 FE JSR WRITSC
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| 256 |
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0244 *
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| 257 |
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0245 * LDX #BUFFER
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| 258 |
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0246 * CLRA
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| 259 |
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0247 * LDB #1
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| 260 |
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0248 * JSR READSC
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| 261 |
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0249 * LDX #BUFFER
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| 262 |
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0250 * LDA #$AA set the init flag
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| 263 |
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0251 * STA 0,X
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| 264 |
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0252 * LDA #$55
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| 265 |
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0253 * STA 1,X
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| 266 |
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0254 * CLRA
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| 267 |
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0255 * LDB #1
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| 268 |
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0256 * JSR WRITSC
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| 269 |
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0257 *
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| 270 |
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0258 * Write Boot sector
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| 271 |
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0259 *
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| 272 |
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0260 049C 8E C0 00 LDX #$C000
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| 273 |
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0261 049F 4F CLRA TRACK 0
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| 274 |
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0262 04A0 C6 01 LDB #$01 SECTOR 1
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| 275 |
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0263 04A2 B7 01 08 STA TRACK
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| 276 |
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0264 04A5 F7 01 09 STB SECTOR
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| 277 |
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0265 04A8 17 00 53 LBSR WRITSC
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| 278 |
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0266 *
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| 279 |
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0267 04AB 8E 03 8F UFEXIT LDX #UFMSG1
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| 280 |
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0268 04AE 7E 03 45 JMP PDATA1
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| 281 |
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0269 *
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| 282 |
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0270 *
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| 283 |
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0271 ** FLEX 9 COMPACT FLASH DISK DRIVERS
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| 284 |
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0272 *
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| 285 |
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0273 * FOR SYS09BUG 1.2 ON THE BURCHED B5-X300
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| 286 |
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0274 * WITH I/O MAPPED AT $XE000
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| 287 |
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0275 * AND ROM MAPPED AT $XF000
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| 288 |
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0276 * THE BURCHED B5-X300 HAS 256KBYTES OF SRAM
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| 289 |
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0277 * THE FIRST 64K IS USED BY FLEX,
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| 290 |
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0278 * THE SECOND 192K MAY BE USED AS A RAM DISK
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| 291 |
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0279 *
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| 292 |
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0280 *
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| 293 |
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0281 0010 IMASK EQU $10 IRQ MASK CC
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| 294 |
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0282 0040 FMASK EQU $40 FIRQ MASK CC
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| 295 |
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0283 FFF0 DATREG EQU $FFF0 DAT REGISTERS
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| 296 |
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0284 *
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| 297 |
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0285 E040 CF_BASE EQU $E040
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| 298 |
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0286 E040 CF_DATA EQU CF_BASE+0
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| 299 |
|
|
0287 E041 CF_ERROR EQU CF_BASE+1 ; read error
|
| 300 |
|
|
0288 E041 CF_FEATURE EQU CF_BASE+1 ; write feature
|
| 301 |
|
|
0289 E042 CF_SCNT EQU CF_BASE+2
|
| 302 |
|
|
0290 E043 CF_SNUM EQU CF_BASE+3
|
| 303 |
|
|
0291 E044 CF_CLO EQU CF_BASE+4
|
| 304 |
|
|
0292 E045 CF_CHI EQU CF_BASE+5
|
| 305 |
|
|
0293 E046 CF_HEAD EQU CF_BASE+6
|
| 306 |
|
|
0294 E047 CF_STATUS EQU CF_BASE+7 ; read status
|
| 307 |
|
|
0295 E047 CF_COMAND EQU CF_BASE+7 ; write command
|
| 308 |
|
|
0296 *
|
| 309 |
|
|
0297 * Command Equates
|
| 310 |
|
|
0298 *
|
| 311 |
|
|
0299 0020 CMDREAD EQU $20 ; Read Single sector
|
| 312 |
|
|
0300 0030 CMDWRITE EQU $30 ; Write Single sector
|
| 313 |
|
|
0301 00EF CMDFEATURE EQU $EF
|
| 314 |
|
|
0302 0001 FEAT8BIT EQU $01 ; enable 8 bit transfers
|
| 315 |
|
|
0303 00E0 HEADLBA EQU $E0
|
| 316 |
|
|
0304 *
|
| 317 |
|
|
0305 * Status bit equates
|
| 318 |
|
|
0306 *
|
| 319 |
|
|
0307 0080 BSY EQU $80
|
| 320 |
|
|
0308 0040 DRDY EQU $40
|
| 321 |
|
|
0309 0008 DRQ EQU $08
|
| 322 |
|
|
0310 0001 ERR EQU $01
|
| 323 |
|
|
0311 *
|
| 324 |
|
|
0312 *
|
| 325 |
|
|
0313 * INITIALIZE CF CARD FOR 8 BIT LBA MODE
|
| 326 |
|
|
0314 *
|
| 327 |
|
|
0315 04B1 8D 7F INITDR BSR WAITRDY
|
| 328 |
|
|
0316 04B3 86 E0 LDA #HEADLBA
|
| 329 |
|
|
0317 04B5 B7 E0 46 STA CF_HEAD
|
| 330 |
|
|
0318 04B8 86 01 LDA #FEAT8BIT
|
| 331 |
|
|
0319 04BA B7 E0 41 STA CF_FEATURE
|
| 332 |
|
|
0320 04BD 86 EF LDA #CMDFEATURE
|
| 333 |
|
|
0321 04BF B7 E0 47 STA CF_COMAND
|
| 334 |
|
|
0322 04C2 20 6E BRA WAITRDY
|
| 335 |
|
|
0323 *
|
| 336 |
|
|
0324 * RESTORE DISK DRIVER (SEEK TRACK 00)
|
| 337 |
|
|
0325 *
|
| 338 |
|
|
0326 04C4 8D 5C RESTR1 BSR DRVSEL
|
| 339 |
|
|
0327 04C6 4F CLRA ; Track 0
|
| 340 |
|
|
0328 04C7 C6 01 LDB #$01 ; Sector 1
|
| 341 |
|
|
0329 *
|
| 342 |
|
|
0330 * Seek track and sector
|
| 343 |
|
|
0331 * A holds track number (0 - ??)
|
| 344 |
|
|
0332 * B holds sector number (1 - ??)
|
| 345 |
|
|
0333 * Sector numbers starts from 1
|
| 346 |
|
|
0334 * subtract 1 to start from sector 0 on CF
|
| 347 |
|
|
0335 *
|
| 348 |
|
|
0336 04C9 5A SEEKTS DECB
|
| 349 |
|
|
0337 04CA F7 E0 43 STB CF_SNUM
|
| 350 |
|
|
0338 04CD B7 E0 44 STA CF_CLO
|
| 351 |
|
|
0339 04D0 F6 01 07 LDB DRVNUM
|
| 352 |
|
|
0340 04D3 F7 E0 45 STB CF_CHI
|
| 353 |
|
|
0341 04D6 C6 01 LDB #$01
|
| 354 |
|
|
0342 04D8 F7 E0 42 STB CF_SCNT
|
| 355 |
|
|
0343 04DB 5F CLRB
|
| 356 |
|
|
0344 04DC 39 RTS
|
| 357 |
|
|
0345 *
|
| 358 |
|
|
0346 * READ SECTORS FROM CF
|
| 359 |
|
|
0347 *
|
| 360 |
|
|
0348 *
|
| 361 |
|
|
0349 04DD 8D EA READSC BSR SEEKTS
|
| 362 |
|
|
0350 04DF 86 20 LDA #CMDREAD ; IDE READ MULTIPLE
|
| 363 |
|
|
0351 04E1 B7 E0 47 STA CF_COMAND
|
| 364 |
|
|
0352 04E4 8D 4C BSR WAITRDY
|
| 365 |
|
|
0353 *
|
| 366 |
|
|
0354 * READ LOOP
|
| 367 |
|
|
0355 *
|
| 368 |
|
|
0356 04E6 5F CLRB
|
| 369 |
|
|
0357 04E7 8D 58 RDLP1 BSR WAITDRQ
|
| 370 |
|
|
0358 04E9 B6 E0 40 LDA CF_DATA
|
| 371 |
|
|
0359 04EC A7 80 STA ,X+
|
| 372 |
|
|
0360 04EE 5A DECB
|
| 373 |
|
|
0361 04EF 26 F6 BNE RDLP1
|
| 374 |
|
|
0362 *
|
| 375 |
|
|
0363 04F1 5F CLRB
|
| 376 |
|
|
0364 04F2 8D 4D RDLP2 BSR WAITDRQ
|
| 377 |
|
|
0365 04F4 B6 E0 40 LDA CF_DATA
|
| 378 |
|
|
0366 04F7 5A DECB
|
| 379 |
|
|
0367 04F8 26 F8 BNE RDLP2
|
| 380 |
|
|
0368 *
|
| 381 |
|
|
0369 04FA 8D 36 BSR WAITRDY
|
| 382 |
|
|
0370 04FC 5F CLRB
|
| 383 |
|
|
0371 04FD 39 RTS
|
| 384 |
|
|
0372 *
|
| 385 |
|
|
0373 * WRITE SECTOR TO CF
|
| 386 |
|
|
0374 *
|
| 387 |
|
|
0375 04FE 8D C9 WRITSC BSR SEEKTS ; SEEK TRACK & SECTOR
|
| 388 |
|
|
0376 0500 86 30 LDA #CMDWRITE ; IDE WRITE MULTIPLE
|
| 389 |
|
|
0377 0502 B7 E0 47 STA CF_COMAND
|
| 390 |
|
|
0378 0505 8D 2B BSR WAITRDY
|
| 391 |
|
|
0379 *
|
| 392 |
|
|
0380 * WRITE LOOP
|
| 393 |
|
|
0381 *
|
| 394 |
|
|
0382 0507 5F CLRB
|
| 395 |
|
|
0383 0508 8D 37 WRTLP1 BSR WAITDRQ
|
| 396 |
|
|
0384 050A A6 80 LDA ,X+
|
| 397 |
|
|
0385 050C B7 E0 40 STA CF_DATA
|
| 398 |
|
|
0386 050F 5A DECB
|
| 399 |
|
|
0387 0510 26 F6 BNE WRTLP1
|
| 400 |
|
|
0388 *
|
| 401 |
|
|
0389 0512 5F CLRB
|
| 402 |
|
|
0390 0513 8D 2C WRTLP2 BSR WAITDRQ
|
| 403 |
|
|
0391 0515 4F CLRA
|
| 404 |
|
|
0392 0516 B7 E0 40 STA CF_DATA
|
| 405 |
|
|
0393 0519 5A DECB
|
| 406 |
|
|
0394 051A 26 F7 BNE WRTLP2
|
| 407 |
|
|
0395 *
|
| 408 |
|
|
0396 051C 8D 14 BSR WAITRDY
|
| 409 |
|
|
0397 051E 5F CLRB
|
| 410 |
|
|
0398 051F 39 RTS
|
| 411 |
|
|
0399 *
|
| 412 |
|
|
0400 * CHECK FOR BUSY
|
| 413 |
|
|
0401 * Doubles as VERIFY
|
| 414 |
|
|
0402 *
|
| 415 |
|
|
0403 0520 5F BUSY CLRB Never busy
|
| 416 |
|
|
0404 0521 39 RTS
|
| 417 |
|
|
0405 *
|
| 418 |
|
|
0406 * DRIVE SELECT DISK DRIVER
|
| 419 |
|
|
0407 *
|
| 420 |
|
|
0408 0522 A6 03 DRVSEL LDA 3,X GET DRIVE # FROM FCB
|
| 421 |
|
|
0409 0524 81 03 CMPA #3
|
| 422 |
|
|
0410 0526 23 01 BLS DRVS2 IF > 3, SET IT TO 0
|
| 423 |
|
|
0411 0528 4F CLRA
|
| 424 |
|
|
0412 0529 B7 01 07 DRVS2 STA DRVNUM
|
| 425 |
|
|
0413 052C 5F CLRB ; SET Z, CLEAR C
|
| 426 |
|
|
0414 052D 39 RTS
|
| 427 |
|
|
0415 *
|
| 428 |
|
|
0416 * CHECK DRIVE READY DISK DRIVER
|
| 429 |
|
|
0417 *
|
| 430 |
|
|
0418 052E A6 03 CHKDRV LDA 3,X
|
| 431 |
|
|
0419 0530 5F CLRB ; CLEAR C, SET Z
|
| 432 |
|
|
0420 0531 39 RTS
|
| 433 |
|
|
0421 *
|
| 434 |
|
|
0422 * WAIT UNTIL READY
|
| 435 |
|
|
0423 *
|
| 436 |
|
|
0424 0532 B6 E0 47 WAITRDY LDA CF_STATUS
|
| 437 |
|
|
0425 0535 85 80 BITA #BSY
|
| 438 |
|
|
0426 0537 26 F9 BNE WAITRDY
|
| 439 |
|
|
0427 0539 B6 E0 47 LDA CF_STATUS
|
| 440 |
|
|
0428 053C 85 40 BITA #DRDY
|
| 441 |
|
|
0429 053E 27 F2 BEQ WAITRDY
|
| 442 |
|
|
0430 0540 39 RTS
|
| 443 |
|
|
0431 *
|
| 444 |
|
|
0432 * WAIT FOR DATA REQUEST
|
| 445 |
|
|
0433 *
|
| 446 |
|
|
0434 0541 B6 E0 47 WAITDRQ LDA CF_STATUS
|
| 447 |
|
|
0435 0544 85 08 BITA #DRQ
|
| 448 |
|
|
0436 0546 27 F9 BEQ WAITDRQ
|
| 449 |
|
|
0437 0548 39 RTS
|
| 450 |
|
|
0438 *
|
| 451 |
|
|
0439 *******************************************************
|
| 452 |
|
|
0440 *
|
| 453 |
|
|
0441 * Bootstrap FLEX Loader
|
| 454 |
|
|
0442 *
|
| 455 |
|
|
0443 * SBUG1.8 loads the bootstap loader at $C000
|
| 456 |
|
|
0444 * however the Flex adaption manual has the
|
| 457 |
|
|
0445 * bootstrap loader residing at $C100
|
| 458 |
|
|
0446 *
|
| 459 |
|
|
0447 ******************************************************
|
| 460 |
|
|
0448 *
|
| 461 |
|
|
0449 * Equates
|
| 462 |
|
|
0450 *
|
| 463 |
|
|
0451 C0FF STACK EQU $C0FF
|
| 464 |
|
|
0452 C300 SCTBUF EQU $C300
|
| 465 |
|
|
0453 *
|
| 466 |
|
|
0454 * Start of Utility
|
| 467 |
|
|
0455 *
|
| 468 |
|
|
0456 C000 ORG $C000
|
| 469 |
|
|
0457 C000 20 0B BOOT BRA LOAD0
|
| 470 |
|
|
0458 C002 00 00 00 FCB 0,0,0
|
| 471 |
|
|
0459 C005 00 TRK FCB 0 File start track
|
| 472 |
|
|
0460 C006 00 SCT FCB 0 File start sector
|
| 473 |
|
|
0461 C007 00 DNS FCB 0 Density Flag (not used)
|
| 474 |
|
|
0462 C008 C0 00 TADR FDB $C000 Transfer address
|
| 475 |
|
|
0463 C00A 00 00 LADR FDB 0 Load Address
|
| 476 |
|
|
0464 C00C 00 DRNUM FCB 0 Drive number 0
|
| 477 |
|
|
0465 *
|
| 478 |
|
|
0466 C00D 10 CE C0 FF LOAD0 LDS #STACK Set up stack
|
| 479 |
|
|
0467 C011 FC C0 05 LDD TRK Set up start track and sector
|
| 480 |
|
|
0468 C014 FD C3 00 STD SCTBUF
|
| 481 |
|
|
0469 C017 10 8E C4 00 LDY #SCTBUF+256
|
| 482 |
|
|
0470 *
|
| 483 |
|
|
0471 * Perform actual file load
|
| 484 |
|
|
0472 *
|
| 485 |
|
|
0473 C01B 8D 35 LOAD1 BSR GETCH Get acharcater
|
| 486 |
|
|
0474 C01D 81 02 CMPA #$02 Data record hearder ?
|
| 487 |
|
|
0475 C01F 27 10 BEQ LOAD2 Skip, is so
|
| 488 |
|
|
0476 C021 81 16 CMPA #$16 Xfr address hearder ?
|
| 489 |
|
|
0477 C023 26 F6 BNE LOAD1 Loop if neither
|
| 490 |
|
|
0478 *
|
| 491 |
|
|
0479 * Get transfer address
|
| 492 |
|
|
0480 *
|
| 493 |
|
|
0481 C025 8D 2B BSR GETCH
|
| 494 |
|
|
0482 C027 B7 C0 08 STA TADR
|
| 495 |
|
|
0483 C02A 8D 26 BSR GETCH
|
| 496 |
|
|
0484 C02C B7 C0 09 STA TADR+1
|
| 497 |
|
|
0485 C02F 20 EA BRA LOAD1
|
| 498 |
|
|
0486 *
|
| 499 |
|
|
0487 * Load data record
|
| 500 |
|
|
0488 *
|
| 501 |
|
|
0489 C031 8D 1F LOAD2 BSR GETCH Get load address
|
| 502 |
|
|
0490 C033 B7 C0 0A STA LADR
|
| 503 |
|
|
0491 C036 8D 1A BSR GETCH
|
| 504 |
|
|
0492 C038 B7 C0 0B STA LADR+1
|
| 505 |
|
|
0493 C03B 8D 15 BSR GETCH Get Bytes count
|
| 506 |
|
|
0494 C03D 1F 89 TFR A,B
|
| 507 |
|
|
0495 C03F 5D TSTB
|
| 508 |
|
|
0496 C040 27 D9 BEQ LOAD1 Loop if count = 0
|
| 509 |
|
|
0497 C042 BE C0 0A LDX LADR Get load address
|
| 510 |
|
|
0498 C045 34 14 LOAD3 PSHS B,X
|
| 511 |
|
|
0499 C047 8D 09 BSR GETCH Get data character
|
| 512 |
|
|
0500 C049 35 14 PULS B,X
|
| 513 |
|
|
0501 C04B A7 80 STA ,X+ Store at load address
|
| 514 |
|
|
0502 C04D 5A DECB
|
| 515 |
|
|
0503 C04E 26 F5 BNE LOAD3 Loop until count = 0
|
| 516 |
|
|
0504 C050 20 C9 BRA LOAD1
|
| 517 |
|
|
0505 *
|
| 518 |
|
|
0506 * Get Character routine
|
| 519 |
|
|
0507 * Reads a sector if needed
|
| 520 |
|
|
0508 *
|
| 521 |
|
|
0509 C052 10 8C C4 00 GETCH CMPY #SCTBUF+256 out of data ?
|
| 522 |
|
|
0510 C056 26 0F BNE GETCH4 Go read Character if not
|
| 523 |
|
|
0511 C058 8E C3 00 GETCH2 LDX #SCTBUF Point to buffer
|
| 524 |
|
|
0512 C05B EC 84 LDD 0,X Get forward Link
|
| 525 |
|
|
0513 C05D 27 0B BEQ GO if zero, file is loaded
|
| 526 |
|
|
0514 C05F 8D 21 BSR READ Read next sector
|
| 527 |
|
|
0515 C061 26 9D BNE BOOT start over if error
|
| 528 |
|
|
0516 C063 10 8E C3 04 LDY #SCTBUF+4 Point past link
|
| 529 |
|
|
0517 C067 A6 A0 GETCH4 LDA ,Y+ Else, get a character
|
| 530 |
|
|
0518 C069 39 RTS
|
| 531 |
|
|
0519 *
|
| 532 |
|
|
0520 * File is loaded, Jump to it
|
| 533 |
|
|
0521 *
|
| 534 |
|
|
0522 C06A 6E 9F C0 08 GO JMP [TADR] Jump to transfer address
|
| 535 |
|
|
0523
|
| 536 |
|
|
0524 *
|
| 537 |
|
|
0525 ** FLEX 9 COMPACT FLASH DISK DRIVERS
|
| 538 |
|
|
0526 *
|
| 539 |
|
|
0527 * FOR SYS09BUG 1.2 ON THE BURCHED B5-X300
|
| 540 |
|
|
0528 * WITH I/O MAPPED AT $XE000
|
| 541 |
|
|
0529 * AND ROM MAPPED AT $XF000
|
| 542 |
|
|
0530 * THE BURCHED B5-X300 HAS 256KBYTES OF SRAM
|
| 543 |
|
|
0531 * THE FIRST 64K IS USED BY FLEX,
|
| 544 |
|
|
0532 * THE SECOND 192K MAY BE USED AS A RAM DISK
|
| 545 |
|
|
0533 *
|
| 546 |
|
|
0534 *
|
| 547 |
|
|
0535 *IMASK EQU $10 IRQ MASK CC
|
| 548 |
|
|
0536 *FMASK EQU $40 FIRQ MASK CC
|
| 549 |
|
|
0537 *DATREG EQU $FFF0 DAT REGISTERS
|
| 550 |
|
|
0538 *
|
| 551 |
|
|
0539 *CF_BASE EQU $E040
|
| 552 |
|
|
0540 *CF_DATA EQU CF_BASE+0
|
| 553 |
|
|
0541 *CF_ERROR EQU CF_BASE+1 ; read error
|
| 554 |
|
|
0542 *CF_FEATURE EQU CF_BASE+1 ; write feature
|
| 555 |
|
|
0543 *CF_SCNT EQU CF_BASE+2
|
| 556 |
|
|
0544 *CF_SNUM EQU CF_BASE+3
|
| 557 |
|
|
0545 *CF_CLO EQU CF_BASE+4
|
| 558 |
|
|
0546 *CF_CHI EQU CF_BASE+5
|
| 559 |
|
|
0547 *CF_HEAD EQU CF_BASE+6
|
| 560 |
|
|
0548 *CF_STATUS EQU CF_BASE+7 ; read status
|
| 561 |
|
|
0549 *CF_COMAND EQU CF_BASE+7 ; write command
|
| 562 |
|
|
0550 *
|
| 563 |
|
|
0551 * Command Equates
|
| 564 |
|
|
0552 *
|
| 565 |
|
|
0553 *CMDREAD EQU $20 ; Read Single sector
|
| 566 |
|
|
0554 *CMDWRITE EQU $30 ; Write Single sector
|
| 567 |
|
|
0555 *CMDFEATURE EQU $EF
|
| 568 |
|
|
0556 *FEAT8BIT EQU $01 ; enable 8 bit transfers
|
| 569 |
|
|
0557 *HEADLBA EQU $E0
|
| 570 |
|
|
0558 *
|
| 571 |
|
|
0559 * Status bit equates
|
| 572 |
|
|
0560 *
|
| 573 |
|
|
0561 *BSY EQU $80
|
| 574 |
|
|
0562 *DRDY EQU $40
|
| 575 |
|
|
0563 *DRQ EQU $08
|
| 576 |
|
|
0564 *ERR EQU $01
|
| 577 |
|
|
0565 *
|
| 578 |
|
|
0566 * Seek track and sector
|
| 579 |
|
|
0567 * A holds track number (0 - ??)
|
| 580 |
|
|
0568 * B holds sector number (1 - ??)
|
| 581 |
|
|
0569 * Sector numbers starts from 1
|
| 582 |
|
|
0570 * subtract 1 to start from sector 0 on CF
|
| 583 |
|
|
0571 *
|
| 584 |
|
|
0572 C06E 5A SEEK DECB
|
| 585 |
|
|
0573 C06F F7 E0 43 STB CF_SNUM
|
| 586 |
|
|
0574 C072 B7 E0 44 STA CF_CLO
|
| 587 |
|
|
0575 C075 F6 C0 0C LDB DRNUM
|
| 588 |
|
|
0576 C078 F7 E0 45 STB CF_CHI
|
| 589 |
|
|
0577 C07B C6 01 LDB #$01
|
| 590 |
|
|
0578 C07D F7 E0 42 STB CF_SCNT
|
| 591 |
|
|
0579 C080 5F CLRB
|
| 592 |
|
|
0580 C081 39 RTS
|
| 593 |
|
|
0581 *
|
| 594 |
|
|
0582 * READ SECTORS FROM CF
|
| 595 |
|
|
0583 *
|
| 596 |
|
|
0584 *
|
| 597 |
|
|
0585 C082 8D EA READ BSR SEEK
|
| 598 |
|
|
0586 C084 86 20 LDA #CMDREAD ; IDE READ MULTIPLE
|
| 599 |
|
|
0587 C086 B7 E0 47 STA CF_COMAND
|
| 600 |
|
|
0588 C089 8D 18 BSR WTRDY
|
| 601 |
|
|
0589 *
|
| 602 |
|
|
0590 * READ LOOP
|
| 603 |
|
|
0591 *
|
| 604 |
|
|
0592 C08B 5F CLRB
|
| 605 |
|
|
0593 C08C 8D 24 READ1 BSR WTDRQ
|
| 606 |
|
|
0594 C08E B6 E0 40 LDA CF_DATA
|
| 607 |
|
|
0595 C091 A7 80 STA ,X+
|
| 608 |
|
|
0596 C093 5A DECB
|
| 609 |
|
|
0597 C094 26 F6 BNE READ1
|
| 610 |
|
|
0598 *
|
| 611 |
|
|
0599 C096 5F CLRB
|
| 612 |
|
|
0600 C097 8D 19 READ2 BSR WTDRQ
|
| 613 |
|
|
0601 C099 B6 E0 40 LDA CF_DATA
|
| 614 |
|
|
0602 C09C 5A DECB
|
| 615 |
|
|
0603 C09D 26 F8 BNE READ2
|
| 616 |
|
|
0604 *
|
| 617 |
|
|
0605 C09F 8D 02 BSR WTRDY
|
| 618 |
|
|
0606 C0A1 5F CLRB
|
| 619 |
|
|
0607 C0A2 39 RTS
|
| 620 |
|
|
0608 *
|
| 621 |
|
|
0609 * WAIT UNTIL READY
|
| 622 |
|
|
0610 *
|
| 623 |
|
|
0611 C0A3 B6 E0 47 WTRDY LDA CF_STATUS
|
| 624 |
|
|
0612 C0A6 85 80 BITA #BSY
|
| 625 |
|
|
0613 C0A8 26 F9 BNE WTRDY
|
| 626 |
|
|
0614 C0AA B6 E0 47 LDA CF_STATUS
|
| 627 |
|
|
0615 C0AD 85 40 BITA #DRDY
|
| 628 |
|
|
0616 C0AF 27 F2 BEQ WTRDY
|
| 629 |
|
|
0617 C0B1 39 RTS
|
| 630 |
|
|
0618 *
|
| 631 |
|
|
0619 * WAIT FOR DATA REQUEST
|
| 632 |
|
|
0620 *
|
| 633 |
|
|
0621 C0B2 B6 E0 47 WTDRQ LDA CF_STATUS
|
| 634 |
|
|
0622 C0B5 85 08 BITA #DRQ
|
| 635 |
|
|
0623 C0B7 27 F9 BEQ WTDRQ
|
| 636 |
|
|
0624 C0B9 39 RTS
|
| 637 |
|
|
0625 *
|
| 638 |
|
|
0626 END START
|
| 639 |
|
|
Program + Init Data = 791 bytes
|
| 640 |
|
|
Error count = 0
|
