mirror of
https://github.com/freitz85/AppleIISd.git
synced 2024-11-26 09:49:19 +00:00
Helper and include files added
This commit is contained in:
Florian Reitz
parent
0b33b5d385
commit
4be091a1cb
BIN
AppleIISd.bin
BIN
AppleIISd.bin
Binary file not shown.
@ -15,7 +15,9 @@
|
||||
<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" />
|
||||
</ItemGroup>
|
||||
<PropertyGroup Label="Globals">
|
||||
<ProjectGuid>{9EA7EC3D-1771-420F-932F-231A35ED1200}</ProjectGuid>
|
||||
|
||||
@ -10,6 +10,12 @@
|
||||
</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>
|
||||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
<Filter Include="src">
|
||||
|
||||
44
src/AppleIISd.inc
Normal file
44
src/AppleIISd.inc
Normal file
@ -0,0 +1,44 @@
|
||||
;*******************************
|
||||
;
|
||||
; Apple][Sd Firmware
|
||||
; Version 1.0
|
||||
;
|
||||
; (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
|
||||
229
src/AppleIISd.s
229
src/AppleIISd.s
@ -10,42 +10,18 @@
|
||||
;
|
||||
;*******************************
|
||||
|
||||
.import COMMAND
|
||||
.import SDCMD
|
||||
.import GETBLOCK
|
||||
.import CARDDET
|
||||
.import WRPROT
|
||||
.import GETR1
|
||||
.import GETR3
|
||||
|
||||
.include "AppleIISd.inc"
|
||||
|
||||
.define DEBUG 0
|
||||
|
||||
; 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
|
||||
|
||||
|
||||
; signature bytes
|
||||
|
||||
.segment "SLOTROM"
|
||||
@ -431,190 +407,6 @@ 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
|
||||
; 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
|
||||
@ -885,4 +677,3 @@ ACMD4140: .byt $69, $40, $00
|
||||
.byt $00, $00, $77
|
||||
ACMD410: .byt $69, $00, $00
|
||||
.byt $00, $00, $FF
|
||||
|
||||
|
||||
206
src/Helper.s
Normal file
206
src/Helper.s
Normal file
@ -0,0 +1,206 @@
|
||||
;*******************************
|
||||
;
|
||||
; Apple][Sd Firmware
|
||||
; Version 1.0
|
||||
;
|
||||
; (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
|
||||
; 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
|
||||
Loading…
Reference in New Issue
Block a user