mirror of
https://github.com/freitz85/AppleIISd.git
synced 2024-11-22 13:31:39 +00:00
Merge branch 'devel'
This commit is contained in:
Florian Reitz
commit
06efc602c4
BIN
AppleIISd.bin
BIN
AppleIISd.bin
Binary file not shown.
@ -15,7 +15,10 @@
|
||||
<None Include="obj\AppleIISd.lst" />
|
||||
<None Include="README.md" />
|
||||
<None Include="src\AppleIISd.cfg" />
|
||||
<None Include="src\AppleIISd.inc" />
|
||||
<None Include="src\AppleIISd.s" />
|
||||
<None Include="src\Helper.s" />
|
||||
<None Include="src\ProDOS.s" />
|
||||
</ItemGroup>
|
||||
<PropertyGroup Label="Globals">
|
||||
<ProjectGuid>{9EA7EC3D-1771-420F-932F-231A35ED1200}</ProjectGuid>
|
||||
|
||||
@ -10,6 +10,15 @@
|
||||
</None>
|
||||
<None Include="README.md" />
|
||||
<None Include="obj\AppleIISd.lst" />
|
||||
<None Include="src\Helper.s">
|
||||
<Filter>src</Filter>
|
||||
</None>
|
||||
<None Include="src\AppleIISd.inc">
|
||||
<Filter>src</Filter>
|
||||
</None>
|
||||
<None Include="src\ProDOS.s">
|
||||
<Filter>src</Filter>
|
||||
</None>
|
||||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
<Filter Include="src">
|
||||
|
||||
45
src/AppleIISd.inc
Normal file
45
src/AppleIISd.inc
Normal file
@ -0,0 +1,45 @@
|
||||
;*******************************
|
||||
;
|
||||
; Apple][Sd Firmware
|
||||
; Version 1.1
|
||||
; Defines
|
||||
;
|
||||
; (c) Florian Reitz, 2017
|
||||
;
|
||||
; X register usually contains SLOT16
|
||||
; Y register is used for counting or SLOT
|
||||
;
|
||||
;*******************************
|
||||
|
||||
; Memory defines
|
||||
|
||||
SLOT16 := $2B ; $s0 -> slot * 16
|
||||
SLOT := $3D ; $0s
|
||||
CMDLO := $40
|
||||
CMDHI := $41
|
||||
|
||||
DCMD := $42 ; Command code
|
||||
BUFFER := $44 ; Buffer address
|
||||
BLOCK := $46 ; Block number
|
||||
|
||||
R30 := $0478
|
||||
R31 := $04F8
|
||||
R32 := $0578
|
||||
R33 := $05F8
|
||||
CURSLOT := $07F8 ; $Cs
|
||||
OAPPLE := $C061 ; open apple key
|
||||
DATA := $C080
|
||||
CTRL := DATA+1
|
||||
DIV := DATA+2
|
||||
SS := DATA+3
|
||||
|
||||
; Constants
|
||||
|
||||
DUMMY = $FF
|
||||
FRX = $10 ; CTRL register
|
||||
ECE = $04
|
||||
SS0 = $01 ; SS register
|
||||
SDHC = $10
|
||||
WP = $20
|
||||
CD = $40
|
||||
INITED = $80
|
||||
652
src/AppleIISd.s
652
src/AppleIISd.s
@ -2,6 +2,7 @@
|
||||
;
|
||||
; Apple][Sd Firmware
|
||||
; Version 1.1
|
||||
; Main source
|
||||
;
|
||||
; (c) Florian Reitz, 2017
|
||||
;
|
||||
@ -10,43 +11,42 @@
|
||||
;
|
||||
;*******************************
|
||||
|
||||
.define DEBUG 0
|
||||
|
||||
; Memory defines
|
||||
.import GETR1
|
||||
.import GETR3
|
||||
.import SDCMD
|
||||
.import CARDDET
|
||||
.import STATUS
|
||||
.import READ
|
||||
.import WRITE
|
||||
|
||||
SLOT16 := $2B ; $s0 -> slot * 16
|
||||
SLOT := $3D ; $0s
|
||||
CMDLO := $40
|
||||
CMDHI := $41
|
||||
|
||||
DCMD := $42 ; Command code
|
||||
BUFFER := $44 ; Buffer address
|
||||
BLOCK := $46 ; Block number
|
||||
|
||||
R30 := $0478
|
||||
R31 := $04F8
|
||||
R32 := $0578
|
||||
R33 := $05F8
|
||||
CURSLOT := $07F8 ; $Cs
|
||||
OAPPLE := $C061 ; open apple key
|
||||
DATA := $C080
|
||||
CTRL := DATA+1
|
||||
DIV := DATA+2
|
||||
SS := DATA+3
|
||||
|
||||
; Constants
|
||||
|
||||
DUMMY = $FF
|
||||
FRX = $10 ; CTRL register
|
||||
ECE = $04
|
||||
SS0 = $01 ; SS register
|
||||
SDHC = $10
|
||||
WP = $20
|
||||
CD = $40
|
||||
INITED = $80
|
||||
.include "AppleIISd.inc"
|
||||
|
||||
|
||||
; signature bytes
|
||||
;*******************************
|
||||
;
|
||||
; Signature bytes
|
||||
;
|
||||
; 65535 blocks
|
||||
; Removable media
|
||||
; Non-interruptable
|
||||
; 2 drives
|
||||
; Read, write and status allowed
|
||||
;
|
||||
;*******************************
|
||||
|
||||
.segment "SLOTID"
|
||||
.dbyt $FFFF ; 65535 blocks
|
||||
.byt $97 ; Status bits
|
||||
.byt <DRIVER ; LSB of driver
|
||||
|
||||
|
||||
;*******************************
|
||||
;
|
||||
; Bootcode
|
||||
;
|
||||
; Is executed on boot or PR#
|
||||
;
|
||||
;*******************************
|
||||
|
||||
.segment "SLOTROM"
|
||||
LDX #$20
|
||||
@ -55,15 +55,6 @@ INITED = $80
|
||||
LDX #$3C
|
||||
|
||||
; find slot nr
|
||||
|
||||
.if DEBUG
|
||||
LDA #$04
|
||||
STA SLOT
|
||||
LDA #$C4
|
||||
STA CURSLOT
|
||||
LDA #$40
|
||||
|
||||
.else
|
||||
PHP
|
||||
SEI
|
||||
LDA #$60 ; opcode for RTS
|
||||
@ -79,7 +70,6 @@ INITED = $80
|
||||
ASL A
|
||||
ASL A
|
||||
ASL A
|
||||
.endif
|
||||
|
||||
STA SLOT16 ; $s0
|
||||
TAX ; X holds now SLOT16
|
||||
@ -107,63 +97,14 @@ INITED = $80
|
||||
@INIT: JSR INIT
|
||||
|
||||
|
||||
;*******************************
|
||||
;
|
||||
; Install SD card driver
|
||||
;
|
||||
;*******************************
|
||||
|
||||
.if DEBUG
|
||||
|
||||
; see if slot has a driver already
|
||||
|
||||
LDX $BF31 ; get devcnt
|
||||
@INSTALL: LDA $BF32,X ; get a devnum
|
||||
AND #$70 ; isolate slot
|
||||
CMP SLOT16 ; slot?
|
||||
BEQ @INSOUT ; yes, skip it
|
||||
DEX
|
||||
BPL @INSTALL ; keep up the search
|
||||
|
||||
; restore the devnum to the list
|
||||
|
||||
LDX $BF31 ; get devcnt again
|
||||
CPX #$0D ; device table full?
|
||||
BNE @INST2
|
||||
|
||||
JSR $FF3A ; bell
|
||||
JMP @INSOUT ; do something!
|
||||
|
||||
@INST2: LDA $BF32-1,X ; move all entries down
|
||||
STA $BF32,X ; to make room at front
|
||||
DEX ; for a new entry
|
||||
BNE @INST2
|
||||
LDA #$04 ; ProFile type device
|
||||
ORA SLOT16
|
||||
STA $BF32 ; slot, drive 1 at top of list
|
||||
INC $BF31 ; update devcnt
|
||||
|
||||
; now insert the device driver vector
|
||||
|
||||
LDA SLOT
|
||||
ASL
|
||||
TAX
|
||||
LDA #<DRIVER
|
||||
STA $BF10,X ; write to driver table
|
||||
LDA #>DRIVER
|
||||
STA $BF11,X
|
||||
@INSOUT: RTS
|
||||
|
||||
|
||||
;*******************************
|
||||
;
|
||||
; Boot from SD card
|
||||
;
|
||||
;*******************************
|
||||
|
||||
.else
|
||||
;@BOOT: CMP #0
|
||||
; BNE @NEXTSLOT ; init not successful
|
||||
;@BOOT: CMP #0
|
||||
; BNE @NEXTSLOT ; init not successful
|
||||
@BOOT: LDA #$01
|
||||
STA DCMD ; load command
|
||||
LDX SLOT16
|
||||
@ -190,7 +131,6 @@ INITED = $80
|
||||
JSR READ ; call driver
|
||||
LDX SLOT16
|
||||
JMP $801 ; goto bootloader
|
||||
.endif
|
||||
|
||||
|
||||
;*******************************
|
||||
@ -210,15 +150,6 @@ DRIVER: CLD
|
||||
PHA
|
||||
LDA CMDHI
|
||||
PHA
|
||||
|
||||
.if DEBUG
|
||||
LDA #$04
|
||||
STA SLOT
|
||||
LDA #$C4
|
||||
STA CURSLOT
|
||||
LDA #$40
|
||||
|
||||
.else
|
||||
PHP
|
||||
SEI
|
||||
LDA #$60 ; opcode for RTS
|
||||
@ -234,7 +165,6 @@ DRIVER: CLD
|
||||
ASL A
|
||||
ASL A
|
||||
ASL A
|
||||
.endif
|
||||
|
||||
STA SLOT16 ; $s0
|
||||
TAX ; X holds now SLOT16
|
||||
@ -254,10 +184,6 @@ DRIVER: CLD
|
||||
BEQ @READ
|
||||
CMP #2
|
||||
BEQ @WRITE
|
||||
.if DEBUG
|
||||
CMP #$FF
|
||||
BEQ @TEST
|
||||
.endif
|
||||
LDA #1 ; unknown command
|
||||
SEC
|
||||
BRA @RESTZP
|
||||
@ -268,10 +194,6 @@ DRIVER: CLD
|
||||
BRA @RESTZP
|
||||
@WRITE: JSR WRITE
|
||||
BRA @RESTZP
|
||||
.if DEBUG
|
||||
@TEST: JSR TEST ; do device test
|
||||
BRA @RESTZP
|
||||
.endif
|
||||
|
||||
@INIT: JSR INIT
|
||||
BCC @CMD ; init ok
|
||||
@ -290,24 +212,6 @@ DRIVER: CLD
|
||||
RTS
|
||||
|
||||
|
||||
;*******************************
|
||||
;
|
||||
; Signature bytes
|
||||
;
|
||||
; 65535 blocks
|
||||
; Removable media
|
||||
; Non-interruptable
|
||||
; 2 drives
|
||||
; Read, write and status allowed
|
||||
;
|
||||
;*******************************
|
||||
|
||||
.segment "SLOTID"
|
||||
.dbyt $FFFF ; 65535 blocks
|
||||
.byt $97 ; Status bits
|
||||
.byt <DRIVER ; LSB of driver
|
||||
|
||||
|
||||
;*******************************
|
||||
;
|
||||
; Initialize SD card
|
||||
@ -354,14 +258,14 @@ INIT: LDA #$03 ; set SPI mode 3
|
||||
LDA #>CMD8
|
||||
STA CMDHI
|
||||
JSR SDCMD
|
||||
JSR GETR3 ; R7 is also 1+4 bytes
|
||||
JSR GETR3 ; R7 is also 1+4 bytes
|
||||
CMP #$01
|
||||
BNE @SDV1 ; may be SD Ver. 1
|
||||
|
||||
LDY SLOT ; check for $aa in R33
|
||||
LDA R33,Y
|
||||
CMP #$AA
|
||||
BNE @ERROR1 ; error!
|
||||
LDY SLOT ; check for $aa in R33
|
||||
LDA R33,Y
|
||||
CMP #$AA
|
||||
BNE @ERROR1 ; error!
|
||||
|
||||
@SDV2: LDA #<CMD55
|
||||
STA CMDLO
|
||||
@ -369,7 +273,7 @@ INIT: LDA #$03 ; set SPI mode 3
|
||||
STA CMDHI
|
||||
JSR SDCMD
|
||||
JSR GETR1
|
||||
LDA #<ACMD4140 ; enable SDHC support
|
||||
LDA #<ACMD4140 ; enable SDHC support
|
||||
STA CMDLO
|
||||
LDA #>ACMD4140
|
||||
STA CMDHI
|
||||
@ -381,20 +285,20 @@ INIT: LDA #$03 ; set SPI mode 3
|
||||
BNE @ERROR1 ; error!
|
||||
|
||||
; SD Ver. 2 initialized!
|
||||
LDA #<CMD58 ; check for SDHC
|
||||
STA CMDLO
|
||||
LDA #>CMD58
|
||||
STA CMDHI
|
||||
JSR SDCMD
|
||||
JSR GETR3
|
||||
CMP #0
|
||||
BNE @ERROR1 ; error!
|
||||
LDY SLOT
|
||||
LDA R30,Y
|
||||
AND #$40 ; check CCS
|
||||
BEQ @BLOCKSZ
|
||||
|
||||
LDA SS,X ; card is SDHC
|
||||
LDA #<CMD58 ; check for SDHC
|
||||
STA CMDLO
|
||||
LDA #>CMD58
|
||||
STA CMDHI
|
||||
JSR SDCMD
|
||||
JSR GETR3
|
||||
CMP #0
|
||||
BNE @ERROR1 ; error!
|
||||
LDY SLOT
|
||||
LDA R30,Y
|
||||
AND #$40 ; check CCS
|
||||
BEQ @BLOCKSZ
|
||||
|
||||
LDA SS,X ; card is SDHC
|
||||
ORA #SDHC
|
||||
STA SS,X
|
||||
JMP @END
|
||||
@ -461,445 +365,6 @@ INIT: LDA #$03 ; set SPI mode 3
|
||||
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 or R7
|
||||
; 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
|
||||
JMP @WAIT ; first byte is already there
|
||||
@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 ; R30 is MSB
|
||||
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
|
||||
LDA #$58 ; send CMD24
|
||||
JSR COMMAND ; send command
|
||||
CMP #0
|
||||
BNE @IOERROR ; check for error
|
||||
|
||||
LDA #DUMMY
|
||||
STA DATA,X ; send dummy
|
||||
LDA #$FE
|
||||
STA DATA,X ; send data token
|
||||
|
||||
LDY #0
|
||||
@LOOP1: LDA (BUFFER),Y
|
||||
STA DATA,X
|
||||
INY
|
||||
BNE @LOOP1
|
||||
INC BUFFER+1
|
||||
@LOOP2: LDA (BUFFER),Y
|
||||
STA DATA,X
|
||||
INY
|
||||
BNE @LOOP2
|
||||
DEC BUFFER+1
|
||||
|
||||
@CRC: LDA #DUMMY
|
||||
STA DATA,X ; send 2 dummy crc bytes
|
||||
STA DATA,X
|
||||
|
||||
STA DATA,X ; get data response
|
||||
LDA DATA,X
|
||||
AND #$1F
|
||||
CMP #$05
|
||||
BNE @IOERROR ; check for write error
|
||||
CLC ; no error
|
||||
LDA #0
|
||||
|
||||
@DONE: PHP
|
||||
PHA
|
||||
@WAIT: LDA #DUMMY
|
||||
STA DATA,X ; wait for write cycle
|
||||
LDA DATA,X ; to complete
|
||||
BEQ @WAIT
|
||||
|
||||
LDA SS,X ; disable /CS
|
||||
ORA #SS0
|
||||
STA SS,X
|
||||
PLA
|
||||
PLP
|
||||
RTS
|
||||
|
||||
@IOERROR: SEC ; an error occured
|
||||
LDA #$27
|
||||
BRA @DONE
|
||||
|
||||
@WPERROR: SEC
|
||||
LDA #$2B
|
||||
BRA @DONE
|
||||
|
||||
|
||||
|
||||
;*******************************
|
||||
;
|
||||
; Test routine
|
||||
;
|
||||
;*******************************
|
||||
|
||||
.if DEBUG
|
||||
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
|
||||
|
||||
|
||||
TEXT: .asciiz " Apple][Sd v1.1 (c)2017 Florian Reitz"
|
||||
|
||||
CMD0: .byt $40, $00, $00
|
||||
@ -911,11 +376,10 @@ CMD8: .byt $48, $00, $00
|
||||
CMD16: .byt $50, $00, $00
|
||||
.byt $02, $00, $FF
|
||||
CMD55: .byt $77, $00, $00
|
||||
.byt $00, $00, $FF
|
||||
CMD58: .byt $7A, $00, $00
|
||||
.byt $00, $00, $FF
|
||||
CMD58: .byt $7A, $00, $00
|
||||
.byt $00, $00, $FF
|
||||
ACMD4140: .byt $69, $40, $00
|
||||
.byt $00, $00, $77
|
||||
ACMD410: .byt $69, $00, $00
|
||||
.byt $00, $00, $FF
|
||||
|
||||
|
||||
208
src/Helper.s
Normal file
208
src/Helper.s
Normal file
@ -0,0 +1,208 @@
|
||||
;*******************************
|
||||
;
|
||||
; Apple][Sd Firmware
|
||||
; Version 1.1
|
||||
; Helper functions
|
||||
;
|
||||
; (c) Florian Reitz, 2017
|
||||
;
|
||||
; X register usually contains SLOT16
|
||||
; Y register is used for counting or SLOT
|
||||
;
|
||||
;*******************************
|
||||
|
||||
.export COMMAND
|
||||
.export SDCMD
|
||||
.export GETBLOCK
|
||||
.export CARDDET
|
||||
.export WRPROT
|
||||
.export GETR1
|
||||
.export GETR3
|
||||
|
||||
.include "AppleIISd.inc"
|
||||
.segment "EXTROM"
|
||||
|
||||
|
||||
;*******************************
|
||||
;
|
||||
; 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 or R7
|
||||
; 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
|
||||
JMP @WAIT ; first byte is already there
|
||||
@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 ; R30 is MSB
|
||||
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
|
||||
205
src/ProDOS.s
Normal file
205
src/ProDOS.s
Normal file
@ -0,0 +1,205 @@
|
||||
;*******************************
|
||||
;
|
||||
; Apple][Sd Firmware
|
||||
; Version 1.1
|
||||
; ProDOS functions
|
||||
;
|
||||
; (c) Florian Reitz, 2017
|
||||
;
|
||||
; X register usually contains SLOT16
|
||||
; Y register is used for counting or SLOT
|
||||
;
|
||||
;*******************************
|
||||
|
||||
.export STATUS
|
||||
.export READ
|
||||
.export WRITE
|
||||
|
||||
.import COMMAND
|
||||
.import SDCMD
|
||||
.import GETBLOCK
|
||||
.import WRPROT
|
||||
.import GETR1
|
||||
.import GETR3
|
||||
|
||||
.include "AppleIISd.inc"
|
||||
.segment "EXTROM"
|
||||
|
||||
|
||||
;*******************************
|
||||
;
|
||||
; 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
|
||||
LDA #$58 ; send CMD24
|
||||
JSR COMMAND ; send command
|
||||
CMP #0
|
||||
BNE @IOERROR ; check for error
|
||||
|
||||
LDA #DUMMY
|
||||
STA DATA,X ; send dummy
|
||||
LDA #$FE
|
||||
STA DATA,X ; send data token
|
||||
|
||||
LDY #0
|
||||
@LOOP1: LDA (BUFFER),Y
|
||||
STA DATA,X
|
||||
INY
|
||||
BNE @LOOP1
|
||||
INC BUFFER+1
|
||||
@LOOP2: LDA (BUFFER),Y
|
||||
STA DATA,X
|
||||
INY
|
||||
BNE @LOOP2
|
||||
DEC BUFFER+1
|
||||
|
||||
@CRC: LDA #DUMMY
|
||||
STA DATA,X ; send 2 dummy crc bytes
|
||||
STA DATA,X
|
||||
|
||||
STA DATA,X ; get data response
|
||||
LDA DATA,X
|
||||
AND #$1F
|
||||
CMP #$05
|
||||
BNE @IOERROR ; check for write error
|
||||
CLC ; no error
|
||||
LDA #0
|
||||
|
||||
@DONE: PHP
|
||||
PHA
|
||||
@WAIT: LDA #DUMMY
|
||||
STA DATA,X ; wait for write cycle
|
||||
LDA DATA,X ; to complete
|
||||
BEQ @WAIT
|
||||
|
||||
LDA SS,X ; disable /CS
|
||||
ORA #SS0
|
||||
STA SS,X
|
||||
PLA
|
||||
PLP
|
||||
RTS
|
||||
|
||||
@IOERROR: SEC ; an error occured
|
||||
LDA #$27
|
||||
BRA @DONE
|
||||
|
||||
@WPERROR: SEC
|
||||
LDA #$2B
|
||||
BRA @DONE
|
||||
Loading…
Reference in New Issue
Block a user