2017-08-13 11:34:15 +00:00
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********************************
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*
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* Apple][Sd Firmware
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2017-08-26 22:37:54 +00:00
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* Version 0.6
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2017-08-13 11:34:15 +00:00
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*
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* (c) Florian Reitz, 2017
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*
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* X register usually contains SLOT16
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* Y register is used for counting or SLOT
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*
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********************************
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2017-08-26 11:07:42 +00:00
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DAT
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2017-08-13 11:34:15 +00:00
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2017-08-26 11:07:42 +00:00
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XC ; enable 65C02 code
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DEBUG = 0
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DO DEBUG
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ORG $8000
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ELSE
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ORG $C800 ; Expansion ROM
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FIN
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2017-08-13 11:34:15 +00:00
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* Memory defines
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2017-08-26 11:07:42 +00:00
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SLOT16 = $2B ; $s0 -> slot * 16
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WORK = $3C
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SLOT = $3D ; $0s
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CMDLO = $40
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CMDHI = $41
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CURSLOT = $07F8 ; $Cs
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DATA = $C080
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CTRL = DATA+1
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DIV = DATA+2
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SS = DATA+3
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R30 = $0478
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R31 = $04F8
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R32 = $0578
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R33 = $05F8
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2017-08-13 11:34:15 +00:00
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* Constants
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2017-08-26 11:07:42 +00:00
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DUMMY = $FF
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2017-08-27 13:02:58 +00:00
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FRX = $10 ; CTRL register
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ECE = $04
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SS0 = $01 ; SS register
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WP = $20
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CARDDET = $40
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INITED = $80
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2017-08-13 11:34:15 +00:00
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* signature bytes
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2017-08-26 11:07:42 +00:00
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LDX #$20
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LDY #$00
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LDX #$03
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STX WORK
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2017-08-13 11:34:15 +00:00
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* find slot nr
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2017-08-26 11:07:42 +00:00
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DO DEBUG
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LDA #$04
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STA SLOT
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LDA #$C4
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STA CURSLOT
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LDA #$40
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STA SLOT16
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ELSE
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JSR $FF58
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TSX
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LDA $0100,X
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AND #$0F
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STA SLOT ; $0s
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2017-08-26 22:37:54 +00:00
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ORA #$C0
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STA CURSLOT ; $Cs
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2017-08-26 11:07:42 +00:00
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ASL A
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ASL A
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ASL A
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ASL A
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STA SLOT16 ; $s0
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FIN
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TAX ; X holds now SLOT16
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BIT $CFFF
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JSR INIT
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2017-08-13 11:34:15 +00:00
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*
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* TODO: check for init error
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*
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2017-08-26 22:37:54 +00:00
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********************************
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*
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* Install SD card driver
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*
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********************************
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DO DEBUG
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2017-08-13 11:34:15 +00:00
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* see if slot has a driver already
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2017-08-26 11:07:42 +00:00
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LDX $BF31 ; get devcnt
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2017-08-26 22:37:54 +00:00
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INSTALL LDA $BF32,X ; get a devnum
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2017-08-26 11:07:42 +00:00
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AND #$70 ; isolate slot
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CMP SLOT16 ; slot?
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2017-08-26 22:37:54 +00:00
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BEQ :INSOUT ; yes, skip it
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2017-08-26 11:07:42 +00:00
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DEX
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2017-08-26 22:37:54 +00:00
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BPL INSTALL ; keep up the search
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2017-08-13 11:34:15 +00:00
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* restore the devnum to the list
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2017-08-26 11:07:42 +00:00
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LDX $BF31 ; get devcnt again
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CPX #$0D ; device table full?
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2017-08-26 22:37:54 +00:00
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BNE :INST2
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2017-08-13 11:34:15 +00:00
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2017-08-26 11:07:42 +00:00
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JSR $FF3A ; bell
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2017-08-26 22:37:54 +00:00
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JMP :INSOUT ; do something!
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2017-08-13 11:34:15 +00:00
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2017-08-26 22:37:54 +00:00
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:INST2 LDA $BF32-1,X ; move all entries down
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2017-08-26 11:07:42 +00:00
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STA $BF32,X ; to make room at front
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DEX ; for a new entry
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2017-08-26 22:37:54 +00:00
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BNE :INST2
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2017-08-26 11:07:42 +00:00
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LDA #$04 ; ProFile type device
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ORA SLOT16
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STA $BF32 ; slot, drive 1 at top of list
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INC $BF31 ; update devcnt
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2017-08-13 11:34:15 +00:00
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* now insert the device driver vector
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2017-08-26 11:07:42 +00:00
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LDA SLOT
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ASL
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TAX
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LDA #<DRIVER
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STA $BF10,X ; write to driver table
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LDA #>DRIVER
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STA $BF11,X
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2017-08-26 22:37:54 +00:00
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:INSOUT RTS
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2017-08-26 11:07:42 +00:00
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2017-08-26 22:37:54 +00:00
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********************************
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*
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* Boot from SD card
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*
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********************************
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ELSE
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2017-08-26 11:07:42 +00:00
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BOOT LDA #$01
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STA $42 ; load command
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LDA SLOT16
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TAX
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STA $43 ; slot number
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STZ $44 ; buffer lo
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LDA #$08
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STA $45 ; buffer hi
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STZ $46 ; block lo
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STZ $47 ; block hi
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BIT $CFFF
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JSR READ ; call driver
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JMP $801 ; goto bootloader
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2017-08-13 11:34:15 +00:00
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2017-08-26 22:37:54 +00:00
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FIN
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2017-08-13 11:34:15 +00:00
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********************************
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*
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* Jump table
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*
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********************************
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2017-08-26 11:07:42 +00:00
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DRIVER CLD
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DO DEBUG
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LDA #$04
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STA SLOT
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LDA #$C4
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STA CURSLOT
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LDA #$40
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STA SLOT16
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ELSE
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JSR $FF58 ; find slot nr
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TSX
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LDA $0100,X
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AND #$0F
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STA SLOT ; $0s
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2017-08-26 22:37:54 +00:00
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ORA #$C0
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STA CURSLOT ; $Cs
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2017-08-26 11:07:42 +00:00
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ASL A
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ASL A
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ASL A
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ASL A
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STA SLOT16 ; $s0
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FIN
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TAX ; X holds now SLOT16
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BIT $CFFF
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2017-08-27 13:02:58 +00:00
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LDA #INITED ; check for init
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BIT SS,X
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BEQ :INIT
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2017-08-26 11:07:42 +00:00
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:CMD LDA $42 ; get command
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CMP #$00
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BEQ :STATUS
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CMP #$01
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BEQ :READ
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CMP #$02
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BEQ :WRITE
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CMP #$03
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BEQ :FORMAT
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SEC ; unknown command
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LDA #$01
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RTS
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:STATUS JMP STATUS
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:READ JMP READ
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:WRITE JMP WRITE
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:FORMAT JMP FORMAT
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:INIT JSR INIT
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BRA :CMD
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2017-08-13 11:34:15 +00:00
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2017-08-26 22:37:54 +00:00
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2017-08-13 11:34:15 +00:00
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* Signature bytes
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2017-08-26 11:07:42 +00:00
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DS \ ; fill with zeroes
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2017-08-26 22:37:54 +00:00
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DS -4 ; locate to $xxFC
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2017-08-26 11:07:42 +00:00
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DW $FFFF ; 65535 blocks
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DB $47 ; Status bits
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DB #<DRIVER ; LSB of driver
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2017-08-13 11:34:15 +00:00
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********************************
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*
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* Initialize SD card
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*
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* C Clear - No error
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* Set - Error
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* A $00 - No error
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* $27 - I/O error - Init failed
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* $28 - No card inserted
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*
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********************************
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2017-08-26 11:07:42 +00:00
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INIT CLD
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LDA #$03 ; set SPI mode 3
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STA CTRL,X
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2017-08-27 13:02:58 +00:00
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LDA SS,X
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ORA #SS0 ; set CS high
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2017-08-26 11:07:42 +00:00
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STA SS,X
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LDA #7
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STA DIV,X
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LDY #10
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LDA #DUMMY
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:LOOP STA DATA,X
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:WAIT BIT CTRL,X
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BPL :WAIT
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DEY
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BNE :LOOP ; do 10 times
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2017-08-27 13:02:58 +00:00
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LDA SS,X
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AND #$FF!SS0 ; set CS low
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2017-08-26 11:07:42 +00:00
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STA SS,X
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LDA #<CMD0 ; send CMD0
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STA CMDLO
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LDA #>CMD0
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STA CMDHI
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JSR CMD
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JSR GETR1 ; get response
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CMP #$01
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BNE :ERROR1 ; error!
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LDA #<CMD8 ; send CMD8
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STA CMDLO
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LDA #>CMD8
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STA CMDHI
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JSR CMD
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JSR GETR3
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CMP #$01
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BNE :SDV1 ; may be SD Ver. 1
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2017-08-13 11:34:15 +00:00
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* check for $01aa match!
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2017-08-26 11:07:42 +00:00
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:SDV2 LDA #<CMD55
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STA CMDLO
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LDA #>CMD55
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STA CMDHI
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JSR CMD
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JSR GETR1
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LDA #<ACMD4140
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STA CMDLO
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LDA #>ACMD4140
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STA CMDHI
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JSR CMD
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JSR GETR1
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CMP #$01
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BEQ :SDV2 ; wait for ready
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CMP #$00
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BNE :ERROR1 ; error!
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2017-08-13 11:34:15 +00:00
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* send CMD58
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* SD Ver. 2 initialized!
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2017-08-26 11:07:42 +00:00
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JMP :BLOCKSZ
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:ERROR1 JMP :IOERROR ; needed for far jump
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:SDV1 LDA #<CMD55
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STA CMDLO
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LDA #>CMD55
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STA CMDHI
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JSR CMD ; ignore response
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LDA #<ACMD410
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STA CMDLO
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LDA #>ACMD410
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STA CMDHI
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JSR CMD
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JSR GETR1
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CMP #$01
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BEQ :SDV1 ; wait for ready
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CMP #$00
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BNE :MMC ; may be MMC card
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2017-08-13 11:34:15 +00:00
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* SD Ver. 1 initialized!
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2017-08-26 11:07:42 +00:00
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JMP :BLOCKSZ
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:MMC LDA #<CMD1
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STA CMDLO
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LDA #>CMD1
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STA CMDHI
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:LOOP1 JSR CMD
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JSR GETR1
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CMP #$01
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BEQ :LOOP1 ; wait for ready
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CMP #$00
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BNE :IOERROR ; error!
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2017-08-13 11:34:15 +00:00
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* MMC Ver. 3 initialized!
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2017-08-26 11:07:42 +00:00
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:BLOCKSZ LDA #<CMD16
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STA CMDLO
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LDA #>CMD16
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STA CMDHI
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JSR CMD
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JSR GETR1
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CMP #$00
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BNE :IOERROR ; error!
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2017-08-26 22:37:54 +00:00
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|
|
:END LDY SLOT
|
2017-08-27 13:02:58 +00:00
|
|
|
LDA SS,X
|
|
|
|
|
ORA #INITED ; initialized
|
|
|
|
|
STA SS,X
|
|
|
|
|
LDA CTRL,X
|
|
|
|
|
ORA #ECE ; enable 7MHz
|
|
|
|
|
STA CTRL,X
|
2017-08-26 22:37:54 +00:00
|
|
|
CLC ; all ok
|
2017-08-26 11:07:42 +00:00
|
|
|
LDY #0
|
|
|
|
|
BCC :END1
|
|
|
|
|
:CDERROR SEC
|
|
|
|
|
LDY #$28 ; no card error
|
|
|
|
|
BCS :END1
|
|
|
|
|
:IOERROR SEC
|
|
|
|
|
LDY #$27 ; init error
|
2017-08-27 13:02:58 +00:00
|
|
|
:END1 LDA SS,X ; set CS high
|
|
|
|
|
ORA #SS0
|
2017-08-26 11:07:42 +00:00
|
|
|
STA SS,X
|
|
|
|
|
LDA #0 ; set div to 2
|
|
|
|
|
STA DIV,X
|
|
|
|
|
TYA ; retval in A
|
|
|
|
|
RTS
|
|
|
|
|
|
2017-08-13 11:34:15 +00:00
|
|
|
|
|
|
|
|
********************************
|
|
|
|
|
*
|
|
|
|
|
* Send SD command
|
|
|
|
|
* Call with command in CMDHI and CMDLO
|
|
|
|
|
*
|
|
|
|
|
********************************
|
|
|
|
|
|
2017-08-26 11:07:42 +00:00
|
|
|
CMD PHY
|
|
|
|
|
LDY #0
|
|
|
|
|
:LOOP LDA (CMDLO),Y
|
|
|
|
|
STA DATA,X
|
|
|
|
|
:WAIT BIT CTRL,X ; TC is in N
|
|
|
|
|
BPL :WAIT
|
|
|
|
|
INY
|
|
|
|
|
CPY #6
|
|
|
|
|
BCC :LOOP
|
|
|
|
|
PLY
|
|
|
|
|
RTS
|
2017-08-13 11:34:15 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
|
********************************
|
|
|
|
|
*
|
|
|
|
|
* Get R1
|
|
|
|
|
* R1 is in A
|
|
|
|
|
*
|
|
|
|
|
********************************
|
|
|
|
|
|
2017-08-26 11:07:42 +00:00
|
|
|
GETR1 LDA #DUMMY
|
|
|
|
|
STA DATA,X
|
|
|
|
|
:WAIT BIT CTRL,X
|
|
|
|
|
BPL :WAIT
|
|
|
|
|
LDA DATA,X ; get response
|
|
|
|
|
STA WORK ; save R1
|
|
|
|
|
AND #$80
|
|
|
|
|
BNE GETR1 ; wait for MSB=0
|
|
|
|
|
LDA #DUMMY
|
|
|
|
|
STA DATA,X ; send another dummy
|
|
|
|
|
LDA WORK ; restore R1
|
|
|
|
|
RTS
|
2017-08-13 11:34:15 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
|
********************************
|
|
|
|
|
*
|
|
|
|
|
* Get R3
|
|
|
|
|
* R1 is in A
|
|
|
|
|
* R3 is in scratchpad ram
|
|
|
|
|
*
|
|
|
|
|
********************************
|
|
|
|
|
|
2017-08-26 11:07:42 +00:00
|
|
|
GETR3 JSR GETR1 ; get R1 first
|
|
|
|
|
PHA ; save R1
|
|
|
|
|
PHY ; save Y
|
|
|
|
|
LDY #04 ; load counter
|
|
|
|
|
:LOOP LDA #DUMMY ; send dummy
|
|
|
|
|
STA DATA,X
|
|
|
|
|
:WAIT BIT CTRL,X
|
|
|
|
|
BPL :WAIT
|
|
|
|
|
LDA DATA,X
|
|
|
|
|
PHA
|
|
|
|
|
DEY
|
|
|
|
|
BNE :LOOP ; do 4 times
|
|
|
|
|
LDY SLOT
|
|
|
|
|
PLA
|
|
|
|
|
STA R33,Y ; save R3
|
|
|
|
|
PLA
|
|
|
|
|
STA R32,Y
|
|
|
|
|
PLA
|
|
|
|
|
STA R31,Y
|
|
|
|
|
PLA
|
|
|
|
|
STA R30,Y
|
|
|
|
|
PLY ; restore Y
|
|
|
|
|
LDA #DUMMY
|
|
|
|
|
STA DATA,X ; send another dummy
|
|
|
|
|
PLA ; restore R1
|
|
|
|
|
RTS
|
2017-08-13 11:34:15 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
|
********************************
|
|
|
|
|
*
|
|
|
|
|
* Calculate block address
|
|
|
|
|
* Block no is in $46-47
|
|
|
|
|
* Address is in R30-R33
|
|
|
|
|
*
|
|
|
|
|
********************************
|
|
|
|
|
|
2017-08-26 11:07:42 +00:00
|
|
|
BLOCK PHX ; save X
|
|
|
|
|
PHY ; save Y
|
|
|
|
|
LDX SLOT
|
|
|
|
|
LDA $46 ; store block num
|
|
|
|
|
STA R33,X ; in R30-R33
|
|
|
|
|
LDA $47
|
|
|
|
|
STA R32,X
|
|
|
|
|
LDA #0
|
|
|
|
|
STA R31,X
|
|
|
|
|
STA R30,X
|
|
|
|
|
|
|
|
|
|
LDY #9 ; ASL can't be used with Y
|
|
|
|
|
:LOOP ASL R33,X ; mul block num
|
|
|
|
|
ROL R32,X ; by 512 to get
|
|
|
|
|
ROL R31,X ; real address
|
|
|
|
|
ROL R30,X
|
|
|
|
|
DEY
|
|
|
|
|
BNE :LOOP
|
|
|
|
|
PLY ; restore Y
|
|
|
|
|
PLX ; restore X
|
|
|
|
|
RTS
|
2017-08-13 11:34:15 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
|
********************************
|
|
|
|
|
*
|
|
|
|
|
* Send SD command
|
|
|
|
|
* Cmd is in A
|
2017-08-26 11:07:42 +00:00
|
|
|
*
|
2017-08-13 11:34:15 +00:00
|
|
|
********************************
|
|
|
|
|
|
2017-08-26 11:07:42 +00:00
|
|
|
COMMAND PHY ; save Y
|
|
|
|
|
LDY SLOT
|
|
|
|
|
STA DATA,X ; send command
|
2017-08-26 22:37:54 +00:00
|
|
|
LDA R30,Y ; get arg from R30 on
|
2017-08-26 11:07:42 +00:00
|
|
|
STA DATA,X
|
|
|
|
|
LDA R31,Y
|
|
|
|
|
STA DATA,X
|
|
|
|
|
LDA R32,Y
|
|
|
|
|
STA DATA,X
|
|
|
|
|
LDA R33,Y
|
|
|
|
|
STA DATA,X
|
|
|
|
|
LDA #DUMMY
|
|
|
|
|
STA DATA,X ; dummy crc
|
|
|
|
|
JSR GETR1
|
|
|
|
|
PLY ; restore Y
|
|
|
|
|
RTS
|
2017-08-13 11:34:15 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
|
********************************
|
|
|
|
|
*
|
|
|
|
|
* Status request
|
|
|
|
|
* $43 Unit number DSSS000
|
|
|
|
|
* $44-45 Unused
|
|
|
|
|
* $46-47 Unused
|
|
|
|
|
*
|
|
|
|
|
* C Clear - No error
|
|
|
|
|
* Set - Error
|
|
|
|
|
* A $00 - No error
|
|
|
|
|
* $27 - I/O error
|
|
|
|
|
* $28 - No card inserted / no init
|
|
|
|
|
* $2B - Card write protected
|
|
|
|
|
* x - Blocks avail (low byte)
|
|
|
|
|
* y - Blocks avail (high byte)
|
|
|
|
|
*
|
|
|
|
|
********************************
|
|
|
|
|
|
2017-08-26 11:07:42 +00:00
|
|
|
STATUS CLC ; no error
|
|
|
|
|
LDA #0
|
|
|
|
|
LDX #$FF ; 32 MB partition
|
|
|
|
|
LDY #$FF
|
|
|
|
|
RTS
|
2017-08-13 11:34:15 +00:00
|
|
|
|
2017-08-26 11:07:42 +00:00
|
|
|
* TODO: check for card detect and write protect!
|
2017-08-13 11:34:15 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
|
********************************
|
|
|
|
|
*
|
|
|
|
|
* Read 512 byte block
|
|
|
|
|
* $43 Unit number DSSS0000
|
|
|
|
|
* $44-45 Address (LO/HI) of buffer
|
|
|
|
|
* $46-47 Block number (LO/HI)
|
|
|
|
|
*
|
|
|
|
|
* C Clear - No error
|
|
|
|
|
* Set - Error
|
|
|
|
|
* A $00 - No error
|
|
|
|
|
* $27 - Bad block number
|
|
|
|
|
* $28 - No card inserted
|
|
|
|
|
*
|
|
|
|
|
********************************
|
|
|
|
|
|
|
|
|
|
* TODO: check for card detect!
|
|
|
|
|
|
2017-08-26 11:07:42 +00:00
|
|
|
READ JSR BLOCK ; calc block address
|
2017-08-13 11:34:15 +00:00
|
|
|
|
2017-08-27 13:02:58 +00:00
|
|
|
LDA SS,X ; enable /CS
|
|
|
|
|
AND #$FF!SS0
|
2017-08-26 11:07:42 +00:00
|
|
|
STA SS,X
|
|
|
|
|
LDA #$51 ; send CMD17
|
|
|
|
|
JSR COMMAND ; send command
|
2017-08-13 11:34:15 +00:00
|
|
|
|
2017-08-26 22:37:54 +00:00
|
|
|
CMP #0 ; check for error
|
|
|
|
|
BNE :ERROR
|
|
|
|
|
|
2017-08-26 11:07:42 +00:00
|
|
|
:GETTOK LDA #DUMMY ; get data token
|
|
|
|
|
STA DATA,X
|
|
|
|
|
LDA DATA,X ; get response
|
|
|
|
|
CMP #$FE
|
|
|
|
|
BNE :GETTOK ; wait for $FE
|
|
|
|
|
|
|
|
|
|
LDY #2 ; read data from card
|
2017-08-27 13:02:58 +00:00
|
|
|
LDA CTRL,X ; enable FRX
|
|
|
|
|
ORA #FRX
|
2017-08-26 22:37:54 +00:00
|
|
|
STA CTRL,X
|
|
|
|
|
LDA #DUMMY
|
2017-08-26 11:07:42 +00:00
|
|
|
STA DATA,X
|
2017-08-26 22:37:54 +00:00
|
|
|
:LOOPY STZ WORK
|
|
|
|
|
:LOOPW LDA DATA,X
|
2017-08-26 11:07:42 +00:00
|
|
|
STA ($44)
|
|
|
|
|
INC $44
|
|
|
|
|
BNE :INW
|
|
|
|
|
INC $45 ; inc msb on page boundary
|
|
|
|
|
:INW INC WORK
|
|
|
|
|
BNE :LOOPW
|
|
|
|
|
DEY
|
|
|
|
|
BNE :LOOPY
|
|
|
|
|
|
2017-08-27 13:02:58 +00:00
|
|
|
LDA CTRL,X ; disable FRX
|
|
|
|
|
AND #$FF!FRX
|
2017-08-26 22:37:54 +00:00
|
|
|
STA CTRL,X
|
|
|
|
|
|
|
|
|
|
:CRC LDA #DUMMY ; first crc byte has
|
|
|
|
|
STA DATA,X ; already been read
|
2017-08-26 11:07:42 +00:00
|
|
|
|
2017-08-27 13:02:58 +00:00
|
|
|
LDA SS,X
|
|
|
|
|
ORA #SS0
|
2017-08-26 11:07:42 +00:00
|
|
|
STA SS,X ; disable /CS
|
|
|
|
|
CLC ; no error
|
|
|
|
|
LDA #$00
|
|
|
|
|
RTS
|
2017-08-13 11:34:15 +00:00
|
|
|
|
2017-08-27 13:02:58 +00:00
|
|
|
:ERROR LDA SS,X
|
|
|
|
|
ORA #SS0
|
2017-08-26 22:37:54 +00:00
|
|
|
STA SS,X ; disable /CS
|
|
|
|
|
SEC ; an error occured
|
|
|
|
|
LDA #$27
|
|
|
|
|
RTS
|
|
|
|
|
|
2017-08-13 11:34:15 +00:00
|
|
|
|
|
|
|
|
********************************
|
|
|
|
|
*
|
|
|
|
|
* Write 512 byte block
|
|
|
|
|
* $43 Unit number DSSS000
|
|
|
|
|
* $44-45 Address (LO/HI) of buffer
|
|
|
|
|
* $46-47 Block number (LO/HI)
|
|
|
|
|
*
|
|
|
|
|
* C Clear - No error
|
|
|
|
|
* Set - Error
|
|
|
|
|
* A $00 - No error
|
|
|
|
|
* $27 - I/O error or bad block number
|
|
|
|
|
* $28 - No card inserted
|
|
|
|
|
* $2B - Card write protected
|
|
|
|
|
*
|
|
|
|
|
********************************
|
|
|
|
|
|
|
|
|
|
* TODO: check for card detect and write protect!
|
|
|
|
|
|
2017-08-26 11:07:42 +00:00
|
|
|
WRITE JSR BLOCK ; calc block address
|
|
|
|
|
|
2017-08-27 13:02:58 +00:00
|
|
|
LDA SS,X ; enable /CS
|
|
|
|
|
AND #$FF!SS0
|
2017-08-26 11:07:42 +00:00
|
|
|
STA SS,X
|
|
|
|
|
LDA #$58 ; send CMD24
|
|
|
|
|
JSR COMMAND ; send command
|
|
|
|
|
|
2017-08-26 22:37:54 +00:00
|
|
|
CMP #0 ; check for error
|
|
|
|
|
BNE :ERROR
|
|
|
|
|
|
2017-08-26 11:07:42 +00:00
|
|
|
LDA #DUMMY
|
|
|
|
|
STA DATA,X ; send dummy
|
|
|
|
|
LDA #$FE
|
|
|
|
|
STA DATA,X ; send data token
|
|
|
|
|
|
|
|
|
|
LDY #2 ; send data to card
|
|
|
|
|
:LOOPY STZ WORK
|
|
|
|
|
:LOOPW LDA ($44)
|
|
|
|
|
STA DATA,X
|
|
|
|
|
INC $44
|
|
|
|
|
BNE :INW
|
|
|
|
|
INC $45 ; inc msb on page boundary
|
|
|
|
|
:INW INC WORK
|
|
|
|
|
BNE :LOOPW
|
|
|
|
|
DEY
|
|
|
|
|
BNE :LOOPY
|
|
|
|
|
|
2017-08-26 22:37:54 +00:00
|
|
|
:CRC STA DATA,X ; send 2 dummy crc bytes
|
2017-08-26 11:07:42 +00:00
|
|
|
STA DATA,X
|
2017-08-26 22:37:54 +00:00
|
|
|
|
|
|
|
|
STA DATA,X ; get data response
|
2017-08-26 11:07:42 +00:00
|
|
|
LDA DATA,X
|
|
|
|
|
AND #$1F
|
|
|
|
|
CMP #$05
|
|
|
|
|
BNE :ERROR ; check for write error
|
|
|
|
|
|
2017-08-26 22:37:54 +00:00
|
|
|
:WAIT6 LDA #DUMMY
|
|
|
|
|
STA DATA,X ; wait for write cycle
|
|
|
|
|
LDA DATA,X ; to complete
|
2017-08-26 11:07:42 +00:00
|
|
|
CMP #$00
|
|
|
|
|
BEQ :WAIT6
|
|
|
|
|
|
2017-08-27 13:02:58 +00:00
|
|
|
LDA SS,X ; disable /CS
|
|
|
|
|
ORA #SS0
|
2017-08-26 11:07:42 +00:00
|
|
|
STA SS,X
|
|
|
|
|
CLC ; no error
|
|
|
|
|
LDA #0
|
|
|
|
|
RTS
|
2017-08-13 11:34:15 +00:00
|
|
|
|
2017-08-26 22:37:54 +00:00
|
|
|
:ERROR LDA #DUMMY
|
|
|
|
|
STA DATA,X ; wait for write cycle
|
|
|
|
|
LDA DATA,X ; to complete
|
2017-08-26 11:07:42 +00:00
|
|
|
CMP #$00
|
2017-08-26 22:37:54 +00:00
|
|
|
BEQ :ERROR
|
|
|
|
|
|
2017-08-27 13:02:58 +00:00
|
|
|
LDA SS,X
|
|
|
|
|
ORA #SS0
|
2017-08-26 11:07:42 +00:00
|
|
|
STA SS,X ; disable /CS
|
|
|
|
|
SEC ; an error occured
|
|
|
|
|
LDA #$27
|
|
|
|
|
RTS
|
2017-08-13 11:34:15 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
|
********************************
|
|
|
|
|
*
|
|
|
|
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* Format
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* not supported!
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*
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********************************
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2017-08-26 11:07:42 +00:00
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FORMAT SEC
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LDA #$01 ; invalid command
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RTS
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CMD0 HEX 400000
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HEX 000095
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CMD1 HEX 410000
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HEX 0000F9
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CMD8 HEX 480000
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HEX 01AA87
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CMD16 HEX 500000
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HEX 0200FF
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CMD55 HEX 770000
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HEX 000065
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ACMD4140 HEX 694000
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HEX 000077
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ACMD410 HEX 690000
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HEX 0000FF
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2017-08-26 22:37:54 +00:00
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