2017-11-30 12:00:06 +00:00
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;*******************************
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;
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; Apple][Sd Firmware
|
2017-12-01 13:26:18 +00:00
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; Version 1.0
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2017-11-30 12:00:06 +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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2017-12-01 13:26:18 +00:00
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.define DEBUG 0
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2017-11-30 12:00:06 +00:00
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; Memory defines
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SLOT16 := $2B ; $s0 -> slot * 16
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SLOT := $3D ; $0s
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CMDLO := $40
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CMDHI := $41
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DCMD := $42 ; Command code
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BUFFER := $44 ; Buffer address
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BLOCK := $46 ; Block number
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2017-11-30 15:25:11 +00:00
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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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2017-11-30 12:00:06 +00:00
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CURSLOT := $07F8 ; $Cs
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2017-11-30 15:25:11 +00:00
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OAPPLE := $C061 ; open apple key
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2017-11-30 12:00:06 +00:00
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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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; Constants
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DUMMY = $FF
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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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SDHC = $10
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WP = $20
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CD = $40
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INITED = $80
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; signature bytes
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.segment "SLOTROM"
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LDX #$20
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LDX #$00
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LDX #$03
|
2017-11-30 15:25:11 +00:00
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LDX #$3C
|
2017-11-30 12:00:06 +00:00
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; find slot nr
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2017-12-01 13:26:18 +00:00
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.if DEBUG
|
2017-11-30 12:00:06 +00:00
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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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.else
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PHP
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SEI
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LDA #$60 ; opcode for RTS
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STA SLOT
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JSR SLOT
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TSX
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LDA $0100,X
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STA CURSLOT ; $Cs
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AND #$0F
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PLP
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STA SLOT ; $0s
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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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.endif
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STA SLOT16 ; $s0
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TAX ; X holds now SLOT16
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BIT $CFFF
|
2017-11-30 15:25:11 +00:00
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LDY #0 ; display copyright message
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@DRAW: LDA TEXT,Y
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BEQ @OAPPLE ; check for NULL
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ORA #$80
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STA $0750,Y ; put second to last line
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INY
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BPL @DRAW
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@OAPPLE: BIT OAPPLE ; check for OA key
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BMI @NEXTSLOT ; and skip boot if pressed
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|
2017-11-30 12:00:06 +00:00
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JSR CARDDET
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BCC @INIT
|
2017-11-30 15:25:11 +00:00
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@NEXTSLOT: LDA CURSLOT ; skip boot when no card
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DEC A
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STA CMDHI
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STZ CMDLO
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JMP (CMDLO)
|
2017-11-30 12:00:06 +00:00
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@INIT: JSR INIT
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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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2017-12-01 13:26:18 +00:00
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.if DEBUG
|
2017-11-30 12:00:06 +00:00
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; see if slot has a driver already
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LDX $BF31 ; get devcnt
|
2017-11-30 15:25:11 +00:00
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@INSTALL: LDA $BF32,X ; get a devnum
|
2017-11-30 12:00:06 +00:00
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AND #$70 ; isolate slot
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CMP SLOT16 ; slot?
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BEQ @INSOUT ; yes, skip it
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DEX
|
2017-11-30 15:25:11 +00:00
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BPL @INSTALL ; keep up the search
|
2017-11-30 12:00:06 +00:00
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; restore the devnum to the list
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LDX $BF31 ; get devcnt again
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CPX #$0D ; device table full?
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BNE @INST2
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JSR $FF3A ; bell
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JMP @INSOUT ; do something!
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@INST2: LDA $BF32-1,X ; move all entries down
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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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BNE @INST2
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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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; now insert the device driver vector
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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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@INSOUT: RTS
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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
|
2017-11-30 15:25:11 +00:00
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@BOOT: LDA #$01
|
2017-11-30 12:00:06 +00:00
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STA DCMD ; load command
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LDX SLOT16
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STX $43 ; slot number
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LDA #$08
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STA BUFFER+1 ; buffer hi
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STZ BUFFER ; buffer lo
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STZ BLOCK+1 ; block hi
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STZ BLOCK ; block lo
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BIT $CFFF
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JSR READ ; call driver
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LDA #$01
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STA DCMD ; load command
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LDX SLOT16
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STX $43 ; slot number
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LDA #$0A
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STA BUFFER+1 ; buffer hi
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STZ BUFFER ; buffer lo
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STZ BLOCK+1 ; block hi
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LDA #$01
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STA BLOCK ; block lo
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BIT $CFFF
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JSR READ ; call driver
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LDX SLOT16
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JMP $801 ; goto bootloader
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.endif
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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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DRIVER: CLD
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@SAVEZP: PHA ; make room for retval
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LDA SLOT16 ; save all ZP locations
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PHA
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LDA SLOT
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PHA
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LDA CMDLO
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PHA
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LDA CMDHI
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PHA
|
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|
2017-12-01 13:26:18 +00:00
|
|
|
.if DEBUG
|
2017-11-30 12:00:06 +00:00
|
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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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.else
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PHP
|
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SEI
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LDA #$60 ; opcode for RTS
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STA SLOT
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JSR SLOT
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TSX
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LDA $0100,X
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STA CURSLOT ; $Cs
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AND #$0F
|
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PLP
|
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STA SLOT ; $0s
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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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.endif
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STA SLOT16 ; $s0
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TAX ; X holds now SLOT16
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BIT $CFFF
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JSR CARDDET
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BCC @INITED
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LDA #$2F ; no card inserted
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BRA @RESTZP
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@INITED: LDA #INITED ; check for init
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BIT SS,X
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BEQ @INIT
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@CMD: LDA DCMD ; get command
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BEQ @STATUS ; branch if cmd is 0
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CMP #1
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BEQ @READ
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CMP #2
|
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BEQ @WRITE
|
2017-12-01 13:26:18 +00:00
|
|
|
.if DEBUG
|
2017-11-30 12:00:06 +00:00
|
|
|
CMP #$FF
|
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|
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BEQ @TEST
|
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.endif
|
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|
LDA #1 ; unknown command
|
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SEC
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BRA @RESTZP
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@STATUS: JSR STATUS
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BRA @RESTZP
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@READ: JSR READ
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BRA @RESTZP
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@WRITE: JSR WRITE
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BRA @RESTZP
|
2017-12-01 13:26:18 +00:00
|
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|
.if DEBUG
|
2017-11-30 12:00:06 +00:00
|
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|
@TEST: JSR TEST ; do device test
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BRA @RESTZP
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.endif
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@INIT: JSR INIT
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BCC @CMD ; init ok
|
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@RESTZP: TSX
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STA $105,X ; save retval on stack
|
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PLA ; restore all ZP locations
|
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STA CMDHI
|
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PLA
|
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STA CMDLO
|
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PLA
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STA SLOT
|
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PLA
|
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STA SLOT16
|
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PLA ; get retval
|
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RTS
|
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|
; Signature bytes
|
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.segment "SLOTID"
|
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|
|
|
.dbyt $FFFF ; 65535 blocks
|
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|
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.byt $97 ; Status bits
|
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|
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.byt <DRIVER ; LSB of driver
|
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|
|
|
|
|
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|
;*******************************
|
|
|
|
|
;
|
|
|
|
|
; Initialize SD card
|
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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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|
|
; $2F - No card inserted
|
|
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|
|
;
|
|
|
|
|
;*******************************
|
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|
|
|
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|
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|
|
.segment "EXTROM"
|
|
|
|
|
INIT: LDA #$03 ; set SPI mode 3
|
|
|
|
|
STA CTRL,X
|
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|
|
|
LDA SS,X
|
|
|
|
|
ORA #SS0 ; set CS high
|
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|
|
|
STA SS,X
|
|
|
|
|
LDA #7
|
|
|
|
|
STA DIV,X
|
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|
|
|
LDY #10
|
|
|
|
|
LDA #DUMMY
|
|
|
|
|
|
|
|
|
|
@LOOP: STA DATA,X
|
|
|
|
|
@WAIT: BIT CTRL,X
|
|
|
|
|
BPL @WAIT
|
|
|
|
|
DEY
|
|
|
|
|
BNE @LOOP ; do 10 times
|
|
|
|
|
LDA SS,X
|
|
|
|
|
AND #<~SS0 ; set CS low
|
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|
|
|
STA SS,X
|
|
|
|
|
|
|
|
|
|
LDA #<CMD0 ; send CMD0
|
|
|
|
|
STA CMDLO
|
|
|
|
|
LDA #>CMD0
|
|
|
|
|
STA CMDHI
|
|
|
|
|
JSR SDCMD
|
|
|
|
|
JSR GETR1 ; get response
|
|
|
|
|
CMP #$01
|
|
|
|
|
BNE @ERROR1 ; error!
|
|
|
|
|
|
|
|
|
|
LDA #<CMD8 ; send CMD8
|
|
|
|
|
STA CMDLO
|
|
|
|
|
LDA #>CMD8
|
|
|
|
|
STA CMDHI
|
|
|
|
|
JSR SDCMD
|
|
|
|
|
JSR GETR3
|
|
|
|
|
CMP #$01
|
|
|
|
|
BNE @SDV1 ; may be SD Ver. 1
|
|
|
|
|
|
|
|
|
|
; check for $01aa match!
|
|
|
|
|
@SDV2: LDA #<CMD55
|
|
|
|
|
STA CMDLO
|
|
|
|
|
LDA #>CMD55
|
|
|
|
|
STA CMDHI
|
|
|
|
|
JSR SDCMD
|
|
|
|
|
JSR GETR1
|
|
|
|
|
LDA #<ACMD4140
|
|
|
|
|
STA CMDLO
|
|
|
|
|
LDA #>ACMD4140
|
|
|
|
|
STA CMDHI
|
|
|
|
|
JSR SDCMD
|
|
|
|
|
JSR GETR1
|
|
|
|
|
CMP #$01
|
|
|
|
|
BEQ @SDV2 ; wait for ready
|
|
|
|
|
CMP #0
|
|
|
|
|
BNE @ERROR1 ; error!
|
|
|
|
|
; send CMD58
|
|
|
|
|
; SD Ver. 2 initialized!
|
|
|
|
|
LDA SS,X
|
|
|
|
|
ORA #SDHC
|
|
|
|
|
STA SS,X
|
|
|
|
|
JMP @BLOCKSZ
|
|
|
|
|
|
|
|
|
|
@ERROR1: JMP @IOERROR ; needed for far jump
|
|
|
|
|
|
|
|
|
|
@SDV1: LDA #<CMD55
|
|
|
|
|
STA CMDLO
|
|
|
|
|
LDA #>CMD55
|
|
|
|
|
STA CMDHI
|
|
|
|
|
JSR SDCMD ; ignore response
|
|
|
|
|
LDA #<ACMD410
|
|
|
|
|
STA CMDLO
|
|
|
|
|
LDA #>ACMD410
|
|
|
|
|
STA CMDHI
|
|
|
|
|
JSR SDCMD
|
|
|
|
|
JSR GETR1
|
|
|
|
|
CMP #$01
|
|
|
|
|
BEQ @SDV1 ; wait for ready
|
|
|
|
|
CMP #0
|
|
|
|
|
BNE @MMC ; may be MMC card
|
|
|
|
|
; SD Ver. 1 initialized!
|
|
|
|
|
JMP @BLOCKSZ
|
|
|
|
|
|
|
|
|
|
@MMC: LDA #<CMD1
|
|
|
|
|
STA CMDLO
|
|
|
|
|
LDA #>CMD1
|
|
|
|
|
STA CMDHI
|
|
|
|
|
@LOOP1: JSR SDCMD
|
|
|
|
|
JSR GETR1
|
|
|
|
|
CMP #$01
|
|
|
|
|
BEQ @LOOP1 ; wait for ready
|
|
|
|
|
CMP #0
|
|
|
|
|
BNE @IOERROR ; error!
|
|
|
|
|
; MMC Ver. 3 initialized!
|
|
|
|
|
|
|
|
|
|
@BLOCKSZ: LDA #<CMD16
|
|
|
|
|
STA CMDLO
|
|
|
|
|
LDA #>CMD16
|
|
|
|
|
STA CMDHI
|
|
|
|
|
JSR SDCMD
|
|
|
|
|
JSR GETR1
|
|
|
|
|
CMP #0
|
|
|
|
|
BNE @IOERROR ; error!
|
|
|
|
|
|
|
|
|
|
@END: LDA SS,X
|
|
|
|
|
ORA #INITED ; initialized
|
|
|
|
|
STA SS,X
|
|
|
|
|
LDA CTRL,X
|
|
|
|
|
ORA #ECE ; enable 7MHz
|
|
|
|
|
STA CTRL,X
|
|
|
|
|
CLC ; all ok
|
|
|
|
|
LDY #0
|
|
|
|
|
BCC @END1
|
|
|
|
|
|
|
|
|
|
@IOERROR: SEC
|
|
|
|
|
LDY #$27 ; init error
|
|
|
|
|
@END1: LDA SS,X ; set CS high
|
|
|
|
|
ORA #SS0
|
|
|
|
|
STA SS,X
|
|
|
|
|
LDA #0 ; set div to 2
|
|
|
|
|
STA DIV,X
|
|
|
|
|
TYA ; retval in A
|
|
|
|
|
RTS
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;*******************************
|
|
|
|
|
;
|
|
|
|
|
; Send SD command
|
|
|
|
|
; Call with command in CMDHI and CMDLO
|
|
|
|
|
;
|
|
|
|
|
;*******************************
|
|
|
|
|
|
|
|
|
|
SDCMD: 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
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;*******************************
|
|
|
|
|
;
|
|
|
|
|
; Get R1
|
|
|
|
|
; R1 is in A
|
|
|
|
|
;
|
|
|
|
|
;*******************************
|
|
|
|
|
|
|
|
|
|
GETR1: LDA #DUMMY
|
|
|
|
|
STA DATA,X
|
|
|
|
|
@WAIT: BIT CTRL,X
|
|
|
|
|
BPL @WAIT
|
|
|
|
|
LDA DATA,X ; get response
|
|
|
|
|
BIT #$80
|
|
|
|
|
BNE GETR1 ; wait for MSB=0
|
|
|
|
|
PHA
|
|
|
|
|
LDA #DUMMY
|
|
|
|
|
STA DATA,X ; send another dummy
|
|
|
|
|
PLA ; restore R1
|
|
|
|
|
RTS
|
|
|
|
|
|
|
|
|
|
;*******************************
|
|
|
|
|
;
|
|
|
|
|
; Get R3
|
|
|
|
|
; R1 is in A
|
|
|
|
|
; R3 is in scratchpad ram
|
|
|
|
|
;
|
|
|
|
|
;*******************************
|
|
|
|
|
|
|
|
|
|
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
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;*******************************
|
|
|
|
|
;
|
|
|
|
|
; Calculate block address
|
|
|
|
|
; Unit number is in $43 DSSS0000
|
|
|
|
|
; Block no is in $46-47
|
|
|
|
|
; Address is in R30-R33
|
|
|
|
|
;
|
|
|
|
|
;*******************************
|
|
|
|
|
|
|
|
|
|
GETBLOCK: PHX ; save X
|
|
|
|
|
PHY ; save Y
|
|
|
|
|
TXA
|
|
|
|
|
TAY ; SLOT16 is now in Y
|
|
|
|
|
LDX SLOT
|
|
|
|
|
LDA BLOCK ; store block num
|
|
|
|
|
STA R33,X ; in R30-R33
|
|
|
|
|
LDA BLOCK+1
|
|
|
|
|
STA R32,X
|
|
|
|
|
LDA #0
|
|
|
|
|
STA R31,X
|
|
|
|
|
STA R30,X
|
|
|
|
|
|
|
|
|
|
LDA #$80 ; drive number
|
|
|
|
|
AND $43
|
|
|
|
|
BEQ @SDHC ; D1
|
|
|
|
|
LDA #1 ; D2
|
|
|
|
|
STA R31,X
|
|
|
|
|
|
|
|
|
|
@SDHC: LDA #SDHC
|
|
|
|
|
AND SS,Y ; if card is SDHC,
|
|
|
|
|
BNE @END ; use block addressing
|
|
|
|
|
|
|
|
|
|
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
|
|
|
|
|
|
|
|
|
|
@END: PLY ; restore Y
|
|
|
|
|
PLX ; restore X
|
|
|
|
|
RTS
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;*******************************
|
|
|
|
|
;
|
|
|
|
|
; Send SD command
|
|
|
|
|
; Cmd is in A
|
|
|
|
|
;
|
|
|
|
|
;*******************************
|
|
|
|
|
|
|
|
|
|
COMMAND: PHY ; save Y
|
|
|
|
|
LDY SLOT
|
|
|
|
|
STA DATA,X ; send command
|
|
|
|
|
LDA R30,Y ; get arg from R30 on
|
|
|
|
|
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
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;*******************************
|
|
|
|
|
;
|
|
|
|
|
; Check for card detect
|
|
|
|
|
;
|
|
|
|
|
; C Clear - card in slot
|
|
|
|
|
; Set - no card in slot
|
|
|
|
|
;
|
|
|
|
|
;*******************************
|
|
|
|
|
|
|
|
|
|
CARDDET: PHA
|
|
|
|
|
LDA #CD ; 0: card in
|
|
|
|
|
BIT SS,X ; 1: card out
|
|
|
|
|
CLC
|
|
|
|
|
BEQ @DONE ; card is in
|
|
|
|
|
SEC ; card is out
|
|
|
|
|
@DONE: PLA
|
|
|
|
|
RTS
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;*******************************
|
|
|
|
|
;
|
|
|
|
|
; Check for write protect
|
|
|
|
|
;
|
|
|
|
|
; C Clear - card not protected
|
|
|
|
|
; Set - card write protected
|
|
|
|
|
;
|
|
|
|
|
;*******************************
|
|
|
|
|
|
|
|
|
|
WRPROT: PHA
|
|
|
|
|
LDA #WP ; 0: write enabled
|
|
|
|
|
BIT SS,X ; 1: write disabled
|
|
|
|
|
CLC
|
|
|
|
|
BEQ @DONE
|
|
|
|
|
SEC
|
|
|
|
|
@DONE: PLA
|
|
|
|
|
RTS
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;*******************************
|
|
|
|
|
;
|
|
|
|
|
; Status request
|
|
|
|
|
; $43 Unit number DSSS000
|
|
|
|
|
; $44-45 Unused
|
|
|
|
|
; $46-47 Unused
|
|
|
|
|
;
|
|
|
|
|
; C Clear - No error
|
|
|
|
|
; Set - Error
|
|
|
|
|
; A $00 - No error
|
|
|
|
|
; $2B - Card write protected
|
|
|
|
|
; $2F - No card inserted
|
|
|
|
|
; X - Blocks avail (low byte)
|
|
|
|
|
; Y - Blocks avail (high byte)
|
|
|
|
|
;
|
|
|
|
|
;*******************************
|
|
|
|
|
|
|
|
|
|
STATUS: LDA #0 ; no error
|
|
|
|
|
JSR WRPROT
|
|
|
|
|
BCC @DONE
|
|
|
|
|
LDA #$2B ; card write protected
|
|
|
|
|
|
|
|
|
|
@DONE: LDX #$FF ; 32 MB partition
|
|
|
|
|
LDY #$FF
|
|
|
|
|
RTS
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;*******************************
|
|
|
|
|
;
|
|
|
|
|
; 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
|
|
|
|
|
;
|
|
|
|
|
;*******************************
|
|
|
|
|
|
|
|
|
|
READ: JSR GETBLOCK ; calc block address
|
|
|
|
|
|
|
|
|
|
LDA SS,X ; enable /CS
|
|
|
|
|
AND #<~SS0
|
|
|
|
|
STA SS,X
|
|
|
|
|
LDA #$51 ; send CMD17
|
|
|
|
|
JSR COMMAND ; send command
|
|
|
|
|
CMP #0
|
|
|
|
|
BNE @ERROR ; check for error
|
|
|
|
|
|
|
|
|
|
@GETTOK: LDA #DUMMY ; get data token
|
|
|
|
|
STA DATA,X
|
|
|
|
|
LDA DATA,X ; get response
|
|
|
|
|
CMP #$FE
|
|
|
|
|
BNE @GETTOK ; wait for $FE
|
|
|
|
|
|
|
|
|
|
LDA CTRL,X ; enable FRX
|
|
|
|
|
ORA #FRX
|
|
|
|
|
STA CTRL,X
|
|
|
|
|
LDA #DUMMY
|
|
|
|
|
STA DATA,X
|
|
|
|
|
|
|
|
|
|
LDY #0
|
|
|
|
|
@LOOP1: LDA DATA,X ; read data from card
|
|
|
|
|
STA (BUFFER),Y
|
|
|
|
|
INY
|
|
|
|
|
BNE @LOOP1
|
|
|
|
|
INC BUFFER+1 ; inc msb on page boundary
|
|
|
|
|
@LOOP2: LDA DATA,X
|
|
|
|
|
STA (BUFFER),Y
|
|
|
|
|
INY
|
|
|
|
|
BNE @LOOP2
|
|
|
|
|
DEC BUFFER+1
|
|
|
|
|
|
|
|
|
|
@CRC: LDA DATA,X ; read two bytes crc
|
|
|
|
|
LDA DATA,X ; and ignore
|
|
|
|
|
LDA DATA,X ; read a dummy byte
|
|
|
|
|
|
|
|
|
|
LDA CTRL,X ; disable FRX
|
|
|
|
|
AND #<~FRX
|
|
|
|
|
STA CTRL,X
|
|
|
|
|
CLC ; no error
|
|
|
|
|
LDA #0
|
|
|
|
|
|
|
|
|
|
@DONE: PHP
|
|
|
|
|
PHA
|
|
|
|
|
LDA SS,X
|
|
|
|
|
ORA #SS0
|
|
|
|
|
STA SS,X ; disable /CS
|
|
|
|
|
PLA
|
|
|
|
|
PLP
|
|
|
|
|
RTS
|
|
|
|
|
|
|
|
|
|
@ERROR: SEC ; an error occured
|
|
|
|
|
LDA #$27
|
|
|
|
|
BRA @DONE
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;*******************************
|
|
|
|
|
;
|
|
|
|
|
; Write 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 - I/O error or bad block number
|
|
|
|
|
; $2B - Card write protected
|
|
|
|
|
;
|
|
|
|
|
;*******************************
|
|
|
|
|
|
|
|
|
|
WRITE: JSR WRPROT
|
|
|
|
|
BCS @WPERROR ; card write protected
|
|
|
|
|
|
|
|
|
|
JSR GETBLOCK ; calc block address
|
|
|
|
|
|
|
|
|
|
LDA SS,X ; enable /CS
|
|
|
|
|
AND #<~SS0
|
|
|
|
|
STA SS,X
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LDA #$58 ; send CMD24
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JSR COMMAND ; send command
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CMP #0
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BNE @IOERROR ; check for error
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LDA #DUMMY
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STA DATA,X ; send dummy
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LDA #$FE
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STA DATA,X ; send data token
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LDY #0
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@LOOP1: LDA (BUFFER),Y
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STA DATA,X
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INY
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BNE @LOOP1
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INC BUFFER+1
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@LOOP2: LDA (BUFFER),Y
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STA DATA,X
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INY
|
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BNE @LOOP2
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DEC BUFFER+1
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@CRC: LDA #DUMMY
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STA DATA,X ; send 2 dummy crc bytes
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STA DATA,X
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STA DATA,X ; get data response
|
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|
|
LDA DATA,X
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|
|
AND #$1F
|
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|
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CMP #$05
|
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|
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BNE @IOERROR ; check for write error
|
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|
|
CLC ; no error
|
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|
|
|
LDA #0
|
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|
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|
|
@DONE: PHP
|
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|
|
PHA
|
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|
|
@WAIT: LDA #DUMMY
|
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|
|
STA DATA,X ; wait for write cycle
|
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|
|
LDA DATA,X ; to complete
|
|
|
|
|
BEQ @WAIT
|
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|
|
|
|
|
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|
|
LDA SS,X ; disable /CS
|
|
|
|
|
ORA #SS0
|
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|
|
STA SS,X
|
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|
|
|
PLA
|
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|
|
|
PLP
|
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|
|
RTS
|
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|
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|
|
|
|
|
@IOERROR: SEC ; an error occured
|
|
|
|
|
LDA #$27
|
|
|
|
|
BRA @DONE
|
|
|
|
|
|
|
|
|
|
@WPERROR: SEC
|
|
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|
|
LDA #$2B
|
|
|
|
|
BRA @DONE
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;*******************************
|
|
|
|
|
;
|
|
|
|
|
; Test routine
|
|
|
|
|
;
|
|
|
|
|
;*******************************
|
|
|
|
|
|
2017-12-01 13:26:18 +00:00
|
|
|
.if DEBUG
|
2017-11-30 12:00:06 +00:00
|
|
|
TEST: LDA SLOT16
|
|
|
|
|
PHA
|
|
|
|
|
LDA SLOT
|
|
|
|
|
PHA
|
|
|
|
|
|
|
|
|
|
; get buffer
|
|
|
|
|
LDA #2 ; get 512 byte buffer
|
|
|
|
|
JSR $BEF5 ; call GETBUFR
|
|
|
|
|
BCS @ERROR
|
|
|
|
|
STA BUFFER+1
|
|
|
|
|
STZ BUFFER
|
|
|
|
|
PLA
|
|
|
|
|
STA SLOT
|
|
|
|
|
PLA
|
|
|
|
|
STA SLOT16
|
|
|
|
|
|
|
|
|
|
; fill buffer
|
|
|
|
|
LDY #0
|
|
|
|
|
@LOOP: TYA
|
|
|
|
|
STA (BUFFER),Y
|
|
|
|
|
INY
|
|
|
|
|
BNE @LOOP
|
|
|
|
|
INC BUFFER+1
|
|
|
|
|
@LOOP1: TYA
|
|
|
|
|
STA (BUFFER),Y
|
|
|
|
|
INY
|
|
|
|
|
BNE @LOOP1
|
|
|
|
|
DEC BUFFER+1
|
|
|
|
|
|
|
|
|
|
STZ BLOCK ; block number
|
|
|
|
|
STZ BLOCK+1
|
|
|
|
|
LDX SLOT16
|
|
|
|
|
|
|
|
|
|
; write to card
|
|
|
|
|
JSR WRITE
|
|
|
|
|
BCS @ERROR
|
|
|
|
|
|
|
|
|
|
; read from card
|
|
|
|
|
JSR READ
|
|
|
|
|
BCS @ERROR
|
|
|
|
|
|
|
|
|
|
; check for errors
|
|
|
|
|
LDY #0
|
|
|
|
|
@LOOP2: TYA
|
|
|
|
|
CMP (BUFFER),Y
|
|
|
|
|
BNE @ERRCMP ; error in buffer
|
|
|
|
|
INY
|
|
|
|
|
BNE @LOOP2
|
|
|
|
|
INC BUFFER+1
|
|
|
|
|
@LOOP3: TYA
|
|
|
|
|
CMP (BUFFER),Y
|
|
|
|
|
BNE @ERRCMP
|
|
|
|
|
INY
|
|
|
|
|
BNE @LOOP3
|
|
|
|
|
DEC BUFFER+1
|
|
|
|
|
|
|
|
|
|
; free buffer
|
|
|
|
|
JSR $BEF8 ; call FREEBUFR
|
|
|
|
|
CLC
|
|
|
|
|
LDA #0
|
|
|
|
|
RTS
|
|
|
|
|
|
|
|
|
|
@ERROR: BRK
|
|
|
|
|
@ERRCMP: BRK
|
|
|
|
|
.endif
|
|
|
|
|
|
|
|
|
|
|
2017-12-01 13:26:18 +00:00
|
|
|
TEXT: .asciiz " Apple][Sd v1.0 (c)2017 Florian Reitz"
|
2017-11-30 12:00:06 +00:00
|
|
|
|
|
|
|
|
CMD0: .byt $40, $00, $00
|
|
|
|
|
.byt $00, $00, $95
|
|
|
|
|
CMD1: .byt $41, $00, $00
|
|
|
|
|
.byt $00, $00, $F9
|
|
|
|
|
CMD8: .byt $48, $00, $00
|
|
|
|
|
.byt $01, $AA, $87
|
|
|
|
|
CMD16: .byt $50, $00, $00
|
|
|
|
|
.byt $02, $00, $FF
|
|
|
|
|
CMD55: .byt $77, $00, $00
|
|
|
|
|
.byt $00, $00, $65
|
|
|
|
|
ACMD4140: .byt $69, $40, $00
|
|
|
|
|
.byt $00, $00, $77
|
|
|
|
|
ACMD410: .byt $69, $00, $00
|
|
|
|
|
.byt $00, $00, $FF
|
|
|
|
|
|
