Linear addressing from C700, test code added to ram
This commit is contained in:
Florian Reitz
parent
9e674fe0c6
commit
b0df142692
BIN
AppleIISd.bin
BIN
AppleIISd.bin
Binary file not shown.
198
AppleIISd.hex
198
AppleIISd.hex
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1963
AppleIISd.lst
1963
AppleIISd.lst
File diff suppressed because it is too large
Load Diff
452
AppleIISd.s
452
AppleIISd.s
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@ -17,7 +17,7 @@ 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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ORG $C700 ; Expansion ROM
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FIN
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* Memory defines
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@ -41,6 +41,8 @@ R30 = $0478
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R31 = $04F8
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R32 = $0578
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R33 = $05F8
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RAM0 = $0678
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RAM1 = $06F8
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* Constants
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@ -53,6 +55,196 @@ CD = $40
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INITED = $80
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* signature bytes
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LDX #$20
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LDY #$00
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LDX #$03
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LDY #$FF ; neither 5.25 nor Smartport
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* find slot nr
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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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ELSE
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JSR $FF58
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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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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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FIN
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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 :INIT
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LDA #$2F ; no card inserted
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BRK
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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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DO DEBUG
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* see if slot has a driver already
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LDX $BF31 ; get devcnt
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INSTALL LDA $BF32,X ; get a devnum
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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
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BPL INSTALL ; keep up the search
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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
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BOOT CMP #0 ; check for error
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BEQ :BOOT1
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BRK
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:BOOT1 LDA #$01
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STA DCMD ; load command
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LDX SLOT16
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STA $43 ; slot number
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STZ BUFFER ; buffer lo
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LDA #$08
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STA BUFFER+1 ; buffer hi
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STZ BLOCK ; block lo
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STZ BLOCK+1 ; 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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FIN
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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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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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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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STA CURSLOT ; $Cs
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AND #$0F
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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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FIN
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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 #$2F ; no card inserted
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BRA :DONE
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:INITED LDA #INITED ; check for init
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BIT SS,X
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BEQ :INIT
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:CMD LDA DCMD ; get command
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CMP #0
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BEQ :STATUS
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CMP #1
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BEQ :READ
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CMP #2
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BEQ :WRITE
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CMP #3
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BEQ :FORMAT
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CMP #$FF
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BEQ :TEST
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LDA #1 ; unknown command
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:DONE SEC
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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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:TEST JMP TEST ; do device test
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:INIT JSR INIT
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BCS :DONE ; init failure
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BRA :CMD
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* Signature bytes
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DS \ ; fill with zeroes
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DS -4 ; locate to $xxFC
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DW $FFFF ; 65535 blocks
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DB $17 ; Status bits
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DB #<DRIVER ; LSB of driver
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********************************
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*
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* Initialize SD card
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@ -174,9 +366,6 @@ INIT CLD
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CLC ; all ok
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LDY #0
|
||||
BCC :END1
|
||||
:CDERROR SEC
|
||||
LDY #$2F ; no card error
|
||||
BCS :END1
|
||||
:IOERROR SEC
|
||||
LDY #$27 ; init error
|
||||
:END1 LDA SS,X ; set CS high
|
||||
|
|
@ -387,12 +576,7 @@ STATUS LDA #0 ; no error
|
|||
LDX #$FF ; 32 MB partition
|
||||
LDY #$FF
|
||||
|
||||
JSR CARDDET
|
||||
BCC :WRPROT
|
||||
LDA #$2F ; no card inserted
|
||||
BRA :DONE
|
||||
|
||||
:WRPROT JSR WRPROT
|
||||
JSR WRPROT
|
||||
BCC :DONE
|
||||
LDA #$2B ; card write protected
|
||||
|
||||
|
|
@ -410,14 +594,10 @@ STATUS LDA #0 ; no error
|
|||
* Set - Error
|
||||
* A $00 - No error
|
||||
* $27 - Bad block number
|
||||
* $28 - No card inserted
|
||||
*
|
||||
********************************
|
||||
|
||||
READ JSR CARDDET
|
||||
BCS :ERROR ; no card inserted
|
||||
|
||||
JSR GETBLOCK ; calc block address
|
||||
READ JSR GETBLOCK ; calc block address
|
||||
|
||||
LDA SS,X ; enable /CS
|
||||
AND #$FF!SS0
|
||||
|
|
@ -490,10 +670,7 @@ READ JSR CARDDET
|
|||
*
|
||||
********************************
|
||||
|
||||
WRITE JSR CARDDET
|
||||
BCS :IOERROR ; no card inserted
|
||||
|
||||
JSR WRPROT
|
||||
WRITE JSR WRPROT
|
||||
BCS :WPERROR ; card write protected
|
||||
|
||||
JSR GETBLOCK ; calc block address
|
||||
|
|
@ -578,17 +755,18 @@ FORMAT SEC
|
|||
*
|
||||
********************************
|
||||
|
||||
DO DEBUG
|
||||
TEST
|
||||
|
||||
* get buffer
|
||||
LDY SLOT
|
||||
LDA #2 ; get 512 byte buffer
|
||||
JSR $BEF5 ; call GETBUFR
|
||||
BCS :ERROR
|
||||
STA BUFADD+1
|
||||
STA RAM1,Y
|
||||
STA BUFFER+1
|
||||
STZ BUFADD
|
||||
STZ BUFFER
|
||||
LDA #0
|
||||
STA RAM0,Y
|
||||
STA BUFFER
|
||||
|
||||
* fill buffer
|
||||
LDY #0
|
||||
|
|
@ -604,10 +782,11 @@ TEST
|
|||
|
||||
* write to card
|
||||
LDA #2 ; write cmd
|
||||
LDY SLOT
|
||||
STA DCMD
|
||||
LDA BUFADD ; buffer address
|
||||
LDA RAM0 ; buffer address
|
||||
STA BUFFER
|
||||
LDA BUFADD+1
|
||||
LDA RAM1,Y
|
||||
STA BUFFER+1
|
||||
STZ BLOCK ; block number
|
||||
STZ BLOCK+1
|
||||
|
|
@ -617,10 +796,11 @@ TEST
|
|||
|
||||
* read from card
|
||||
LDA #1 ; read cmd
|
||||
LDY SLOT
|
||||
STA DCMD
|
||||
LDA BUFADD ; buffer address
|
||||
LDA RAM0,Y ; buffer address
|
||||
STA BUFFER
|
||||
LDA BUFADD+1
|
||||
LDA RAM1,Y
|
||||
STA BUFFER+1
|
||||
STZ BLOCK ; block number
|
||||
STZ BLOCK+1
|
||||
|
|
@ -629,9 +809,10 @@ TEST
|
|||
BCS :ERROR
|
||||
|
||||
* check for errors
|
||||
LDA BUFADD ; buffer address
|
||||
LDY SLOT
|
||||
LDA RAM0,Y ; buffer address
|
||||
STA BUFFER
|
||||
LDA BUFADD+1
|
||||
LDA RAM1,Y
|
||||
STA BUFFER+1
|
||||
LDY #0
|
||||
:LOOP2 TYA
|
||||
|
|
@ -655,9 +836,6 @@ TEST
|
|||
:ERROR BRK
|
||||
:ERRCMP BRK
|
||||
|
||||
BUFADD DW 0
|
||||
FIN
|
||||
|
||||
|
||||
CMD0 HEX 400000
|
||||
HEX 000095
|
||||
|
|
@ -674,213 +852,3 @@ ACMD4140 HEX 694000
|
|||
ACMD410 HEX 690000
|
||||
HEX 0000FF
|
||||
|
||||
|
||||
********************************
|
||||
*
|
||||
* This region is mapped to
|
||||
* the $CsXX space. On the ROM
|
||||
* it must appear at address $700
|
||||
*
|
||||
********************************
|
||||
|
||||
DO DEBUG-1
|
||||
DS \
|
||||
DS $400
|
||||
ERR *-1/$CF00 ; must be at $CF00
|
||||
FIN
|
||||
|
||||
* signature bytes
|
||||
|
||||
START LDX #$20
|
||||
LDY #$00
|
||||
LDX #$03
|
||||
LDY #$FF ; neither 5.25 nor Smartport
|
||||
|
||||
* find slot nr
|
||||
|
||||
DO DEBUG
|
||||
LDA #$04
|
||||
STA SLOT
|
||||
LDA #$C4
|
||||
STA CURSLOT
|
||||
LDA #$40
|
||||
|
||||
ELSE
|
||||
JSR $FF58
|
||||
TSX
|
||||
LDA $0100,X
|
||||
STA CURSLOT ; $Cs
|
||||
AND #$0F
|
||||
STA SLOT ; $0s
|
||||
ASL A
|
||||
ASL A
|
||||
ASL A
|
||||
ASL A
|
||||
FIN
|
||||
|
||||
STA SLOT16 ; $s0
|
||||
TAX ; X holds now SLOT16
|
||||
BIT $CFFF
|
||||
JSR CARDDET
|
||||
BCC :INIT
|
||||
LDA #$27 ; no card inserted
|
||||
BRK
|
||||
|
||||
:INIT JSR INIT
|
||||
|
||||
|
||||
********************************
|
||||
*
|
||||
* Install SD card driver
|
||||
*
|
||||
********************************
|
||||
|
||||
DO 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 ; check for error
|
||||
BEQ :BOOT1
|
||||
BRK
|
||||
|
||||
:BOOT1 LDA #$01
|
||||
STA DCMD ; load command
|
||||
LDX SLOT16
|
||||
STA $43 ; slot number
|
||||
STZ BUFFER ; buffer lo
|
||||
LDA #$08
|
||||
STA BUFFER+1 ; buffer hi
|
||||
STZ BLOCK ; block lo
|
||||
STZ BLOCK+1 ; block hi
|
||||
BIT $CFFF
|
||||
JSR READ ; call driver
|
||||
JMP $801 ; goto bootloader
|
||||
|
||||
FIN
|
||||
|
||||
|
||||
********************************
|
||||
*
|
||||
* Jump table
|
||||
*
|
||||
********************************
|
||||
|
||||
DRIVER CLD
|
||||
|
||||
DO DEBUG
|
||||
LDA #$04
|
||||
STA SLOT
|
||||
LDA #$C4
|
||||
STA CURSLOT
|
||||
LDA #$40
|
||||
|
||||
ELSE
|
||||
JSR $FF58 ; find slot nr
|
||||
TSX
|
||||
LDA $0100,X
|
||||
STA CURSLOT ; $Cs
|
||||
AND #$0F
|
||||
STA SLOT ; $0s
|
||||
ASL A
|
||||
ASL A
|
||||
ASL A
|
||||
ASL A
|
||||
FIN
|
||||
|
||||
STA SLOT16 ; $s0
|
||||
TAX ; X holds now SLOT16
|
||||
BIT $CFFF
|
||||
JSR CARDDET
|
||||
BCC :INITED
|
||||
LDA #$27 ; no card inserted
|
||||
BRA :DONE
|
||||
|
||||
:INITED LDA #INITED ; check for init
|
||||
BIT SS,X
|
||||
BEQ :INIT
|
||||
|
||||
:CMD LDA DCMD ; get command
|
||||
CMP #0
|
||||
BEQ :STATUS
|
||||
CMP #1
|
||||
BEQ :READ
|
||||
CMP #2
|
||||
BEQ :WRITE
|
||||
CMP #3
|
||||
BEQ :FORMAT
|
||||
DO DEBUG
|
||||
CMP #$FF
|
||||
BEQ :TEST
|
||||
FIN
|
||||
LDA #1 ; unknown command
|
||||
|
||||
:DONE SEC
|
||||
RTS
|
||||
|
||||
:STATUS JMP STATUS
|
||||
:READ JMP READ
|
||||
:WRITE JMP WRITE
|
||||
:FORMAT JMP FORMAT
|
||||
:INIT JSR INIT
|
||||
BCS :DONE ; init failure
|
||||
BRA :CMD
|
||||
|
||||
DO DEBUG
|
||||
:TEST JMP TEST ; do device test
|
||||
FIN
|
||||
|
||||
|
||||
* Signature bytes
|
||||
|
||||
DS \ ; fill with zeroes
|
||||
DS -4 ; locate to $xxFC
|
||||
DW $FFFF ; 65535 blocks
|
||||
DB $17 ; Status bits
|
||||
DB #<DRIVER ; LSB of driver
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue