Fix in INIT

Firmware/makefile

@@ -9,7 +9,7 @@
 
 # Space or comma separated list of cc65 supported target platforms to build for.
 # Default: c64 (lowercase!)
-TARGETS := apple2enh
+TARGETS := apple2
 
 # Name of the final, single-file executable.
 # Default: name of the current dir with target name appended

Firmware/src/AppleIISd.inc

@@ -53,6 +53,7 @@ SS          :=    DATA+3
 DUMMY       =     $FF
 FRX         =     $10         ; CTRL register
 ECE         =     $04
+TC          =     $80
 SS0         =     $01         ; SS register
 SDHC        =     $10
 WP          =     $20

Firmware/src/AppleIISd.s

@@ -1,7 +1,7 @@
 ;*******************************
 ;
 ; Apple][Sd Firmware
-; Version 1.2.2
+; Version 1.2.3
 ; Main source
 ;
 ; (c) Florian Reitz, 2017 - 2021
@@ -90,9 +90,14 @@
             BPL   @INIT       ; and skip boot if pressed
 
 @NEXTSLOT:  LDA   CURSLOT     ; skip boot when no card
-            DEC   A
+            SBC   #1
             STA   CMDHI       ; use CMDHI/LO as pointer
+            .IFPC02
             STZ   CMDLO
+            .ELSE
+            LDA   #0
+            STA   CMDLO
+            .ENDIF
             JMP   (CMDLO)
 
 @INIT:      JSR   INIT
@@ -107,16 +112,29 @@
 ; load disk blocks 0 and 1 to $800 and $A00
 @BOOT:      LDA   #$08        ; load to $800
             STA   BUFFER+1    ; buffer hi
+            .IFPC02
             STZ   BUFFER      ; buffer lo
             STZ   BLOCKNUM+1  ; block hi
             STZ   BLOCKNUM    ; block lo
+            .ELSE
+            LDA   #0
+            STA   BUFFER
+            STA   BLOCKNUM+1
+            STA   BLOCKNUM
+            .ENDIF
             JSR   READ
             BCS   @NEXTSLOT   ; load not successful 
 
             LDA   #$0A
             STA   BUFFER+1    ; buffer hi
+            .IFPC02
             STZ   BUFFER      ; buffer lo
             STZ   BLOCKNUM+1  ; block hi
+            .ELSE
+            LDA   #0
+            STA   BUFFER
+            STA   BLOCKNUM+1
+            .ENDIF
             LDA   #$01
             STA   BLOCKNUM    ; block lo
             JSR   READ
@@ -135,7 +153,12 @@ DRIVER:     CLC               ; ProDOS entry
             SEC               ; Smartport entry
 
 @PRODOS:    PHP               ; transfer P to X
+            .IFPC02
             PLX
+            .ELSE
+            PLA
+            TAX
+            .ENDIF
             LDY   #PDZPSIZE-1 ; save zeropage area for ProDOS
 @SAVEZP:    LDA   PDZPAREA,Y
             PHA
@@ -172,7 +195,8 @@ DRIVER:     CLC               ; ProDOS entry
             BCS   @SMARTPORT  ; Smartport dispatcher
             JSR   PRODOS      ; ProDOS dispatcher
 
-@END:       PHX
+@END:       .IFPC02
+            PHX
             LDX   SLOT        ; X holds $0s
             STA   R30,X       ; save A
             PLA
@@ -182,6 +206,21 @@ DRIVER:     CLC               ; ProDOS entry
             PHP
             PLA
             STA   R33,X       ; save P
+            .ELSE
+            PHP
+            PHA
+            TXA
+            PHA
+            LDX   SLOT
+            PLA
+            STA   R31,X       ; save X
+            TYA
+            STA   R32,X       ; save Y
+            PLA
+            STA   R30,X       ; save A
+            PLA
+            STA   R33,X       ; save P
+            .ENDIF
             
             LDY   #0
 @RESTZP:    PLA               ; restore zeropage area
@@ -190,6 +229,7 @@ DRIVER:     CLC               ; ProDOS entry
             CPY   #PDZPSIZE
             BCC   @RESTZP
             
+            .IFPC02
             LDA   R33,X       ; get retval
             PHA
             LDA   R32,X
@@ -200,11 +240,25 @@ DRIVER:     CLC               ; ProDOS entry
             PLX                ; restore X
             PLY                ; restore Y
             PLP                ; restore P
+            .ELSE
+            LDA   R33,X
+            PHA
+            LDA   R30,X
+            PHA
+            LDA   R32,X
+            PHA
+            LDA   R31,X
+            TAX                ; restore X
+            PLA
+            TAY                ; restore Y
+            PLA                ; restore A
+            PLP                ; restore P
+            .ENDIF
             RTS
 
 @SMARTPORT: CLC
             JSR   SMARTPORT
-            BRA   @END
+            JMP   @END
 
 
 ;*******************************
@@ -220,15 +274,21 @@ DRIVER:     CLC               ; ProDOS entry
 ;*******************************
 
             .segment "EXTROM"
-INIT:       STZ   CTRL,X      ; reset SPI controller
+INIT:       
+			.IFPC02
+			STZ   CTRL,X      ; reset SPI controller
+			.ELSE
+			LDA	  #0
+			STA   CTRL,X
+			.ENDIF
             LDA   #SS0        ; set CS high
             STA   SS,X
             LDY   #10
-            LDA   #DUMMY
 
-@LOOP:      STA   DATA,X
-@WAIT:      BIT   CTRL,X
-            BPL   @WAIT
+@LOOP:      LDA   #DUMMY
+            STA   DATA,X
+@WAIT:      LDA   CTRL,X
+            BPL   @WAIT       ; wait for TC (bit 7) to get high
             DEY
             BNE   @LOOP       ; do 10 times
             LDA   SS,X
@@ -354,7 +414,7 @@ INIT:       STZ   CTRL,X      ; reset SPI controller
 KNOWNRTS:   RTS
 
 
-TEXT:       .asciiz " Apple][Sd v1.2.2 (c)2021 Florian Reitz"
+TEXT:       .asciiz " Apple][Sd v1.2.3 (c)2021 Florian Reitz"
             .assert(*-TEXT)=40, error, "TEXT must be 40 bytes long"
 
 

Firmware/src/Helper.s

@@ -1,7 +1,7 @@
 ;*******************************
 ;
 ; Apple][Sd Firmware
-; Version 1.2.2
+; Version 1.2.3
 ; Helper functions
 ;
 ; (c) Florian Reitz, 2017 - 2021
@@ -32,16 +32,27 @@
 ;
 ;*******************************
 
-SDCMD:      PHY
+SDCMD:      .IFPC02
+            PHY
+            .ELSE
+            TYA
+            PHA
+            .ENDIF
             LDY   #0
 @LOOP:      LDA   (CMDLO),Y
             STA   DATA,X
-@WAIT:      BIT   CTRL,X      ; TC is in N
+@WAIT:      LDA   CTRL,X      ; TC is in N
             BPL   @WAIT
+
             INY
             CPY   #6
             BCC   @LOOP
+            .IFPC02
             PLY
+            .ELSE
+            PLA
+            TAY
+            .ENDIF
             RTS
 
 
@@ -54,8 +65,9 @@ SDCMD:      PHY
 
 GETR1:      LDA   #DUMMY
             STA   DATA,X
-@WAIT:      BIT   CTRL,X
+@WAIT:      LDA   CTRL,X      ; TC is in N
             BPL   @WAIT
+            
             LDA   DATA,X      ; get response
             BMI   GETR1       ; wait for MSB=0
             PHA
@@ -74,13 +86,19 @@ GETR1:      LDA   #DUMMY
 
 GETR3:      JSR   GETR1       ; get R1 first
             PHA               ; save R1
+            .IFPC02
             PHY               ; save Y
+            .ELSE
+            TYA
+            PHA
+            .ENDIF
             LDY   #04         ; load counter
             JMP   @WAIT       ; first byte is already there 
 @LOOP:      LDA   #DUMMY      ; send dummy
             STA   DATA,X
-@WAIT:      BIT   CTRL,X
+@WAIT:      LDA   CTRL,X      ; TC is in N
             BPL   @WAIT
+
             LDA   DATA,X
             PHA
             DEY
@@ -94,7 +112,12 @@ GETR3:      JSR   GETR1       ; get R1 first
             STA   R31,Y
             PLA
             STA   R30,Y       ; R30 is MSB
+            .IFPC02
             PLY               ; restore Y
+            .ELSE
+            PLA
+            TAY
+            .ENDIF
             LDA   #DUMMY
             STA   DATA,X      ; send another dummy
             PLA               ; restore R1
@@ -110,16 +133,29 @@ GETR3:      JSR   GETR1       ; get R1 first
 ;
 ;*******************************
 
-GETBLOCK:   PHX               ; save X
+GETBLOCK:   .IFPC02
+            PHX               ; save X
             PHY               ; save Y
+            .ELSE
+            TXA
+            PHA               ; save X
+            TYA
+            PHA               ; save y
+            .ENDIF
             LDX   SLOT        ; SLOT is now in X
             LDY   SLOT16
             LDA   BLOCKNUM    ; store block num
             STA   R33,X       ; in R30-R33
             LDA   BLOCKNUM+1
             STA   R32,X
+            .IFPC02
             STZ   R31,X
             STZ   R30,X
+            .ELSE
+            LDA   #0
+            STA   R31,X
+            STA   R30,X
+            .ENDIF
 
             TYA               ; get SLOT16
             EOR   DSNUMBER
@@ -131,7 +167,11 @@ GETBLOCK:   PHX               ; save X
 @DRIVE:     BIT   DSNUMBER    ; drive number
             BPL   @SDHC       ; D1
             LDA   R31,X       ; D2
+            .IFPC02
             INC   A
+            .ELSE
+            ADC   #1
+            .ENDIF
             STA   R31,X
 
 @SDHC:      LDA   #SDHC
@@ -146,20 +186,29 @@ GETBLOCK:   PHX               ; save X
             DEY
             BNE   @LOOP
   
- @END:      PLY               ; restore Y
+ @END:      .IFPC02
+            PLY               ; restore Y
             PLX               ; restore X
+            .ELSE
+            PLA
+            TAY               ; restore y
+            PLA
+            TAX               ; restore x
+            .ENDIF
             RTS
 
 
 ;*******************************
 ;
 ; Send SD command
+; X must contain SLOT16
 ; Cmd is in A
 ;
+; Y is destroyed
+;
 ;*******************************
 
-COMMAND:    PHY               ; save Y
-            LDY   SLOT
+COMMAND:    LDY   SLOT
             STA   DATA,X      ; send command
             LDA   R30,Y       ; get arg from R30 on
             STA   DATA,X
@@ -172,7 +221,6 @@ COMMAND:    PHY               ; save Y
             LDA   #DUMMY
             STA   DATA,X      ; dummy crc
             JSR   GETR1
-            PLY               ; restore Y
             RTS
 
 
@@ -188,7 +236,7 @@ COMMAND:    PHY               ; save Y
 
 CARDDET:    PHA
             LDA   #CD         ; 0: card in
-            BIT   SS,X        ; 1: card out
+            AND   SS,X        ; 1: card out
             CLC
             BEQ   @DONE       ; card is in
             SEC               ; card is out
@@ -208,7 +256,7 @@ CARDDET:    PHA
 
 WRPROT:     PHA
             LDA   #WP         ; 0: write enabled
-            BIT   SS,X        ; 1: write disabled
+            AND   SS,X        ; 1: write disabled
             CLC
             BEQ   @DONE
             SEC
@@ -228,7 +276,7 @@ WRPROT:     PHA
 
 INITED:     PHA
             LDA   #CARD_INIT  ; 0: card not initialized
-            BIT   SS,X        ; 1: card initialized
+            AND   SS,X        ; 1: card initialized
             CLC
             BNE   @DONE
             SEC

Firmware/src/ProDOS.s

@@ -1,7 +1,7 @@
 ;*******************************
 ;
 ; Apple][Sd Firmware
-; Version 1.2.2
+; Version 1.2.3
 ; ProDOS functions
 ;
 ; (c) Florian Reitz, 2017 - 2021
@@ -171,11 +171,11 @@ READ:       JSR   CARDDET     ; check for card
 
 @IOERROR:   SEC               ; an error occured
             LDA   #ERR_IOERR
-            BRA   @DONE
+            BCS   @DONE
 
 @NDERROR:   SEC               ; an error occured
             LDA   #ERR_NODRIVE
-            BRA   @DONE
+            BCS   @DONE
 
 
 ;*******************************
@@ -251,8 +251,8 @@ WRITE:      JSR   WRPROT
 
 @IOERROR:   SEC               ; an error occured
             LDA   #ERR_IOERR
-            BRA   @DONE
+            BCS   @DONE
 
 @WPERROR:   SEC
             LDA   #ERR_NOWRITE
-            BRA   @DONE
+            BCS   @DONE

Firmware/src/Smartport.s

@@ -1,10 +1,10 @@
 ;*******************************
 ;
 ; Apple][Sd Firmware
-; Version 1.2.2
+; Version 1.2
 ; Smartport functions
 ;
-; (c) Florian Reitz, 2017 - 2021
+; (c) Florian Reitz, 2017 - 2018
 ;
 ; X register usually contains SLOT16
 ; Y register is used for counting or SLOT
@@ -70,7 +70,12 @@ SMARTPORT:  LDY   #SMZPSIZE-1   ; save zeropage area for Smarport
             CPX   #$09+1        ; command too large
             BCS   @END
 
+            .IFPC02
             LDA   (SMPARAMLIST) ; parameter count
+            .ELSE
+            LDY   #0
+            LDA   (SMPARAMLIST),Y
+            .ENDIF
             CMP   REQPARAMCOUNT,X
             BNE   @COUNTMISMATCH
 
@@ -82,7 +87,15 @@ SMARTPORT:  LDY   #SMZPSIZE-1   ; save zeropage area for Smarport
             TXA                 ; SMCMD
             ASL   A             ; shift for use of word addresses
             TAX
+            .IFPC02
             JSR   @JMPSPCOMMAND ; Y holds SLOT
+            .ELSE
+            LDA   SPDISPATCH+1,X
+            PHA
+            LDA   SPDISPATCH,X
+            PHA
+            RTS                 ; jump to cmd offset
+            .ENDIF
             BCS   @END          ; jump on error
             LDA   #NO_ERR
 
@@ -95,19 +108,19 @@ SMARTPORT:  LDY   #SMZPSIZE-1   ; save zeropage area for Smarport
             BCC   @RESTZP
 
             TXA
-;warum feste anzahl an bytes für return wert?
             LDY   #2            ; highbyte of # bytes transferred
             LDX   #0            ; low byte of # bytes transferred
-;warum wird mit #1 verglichen?
             CMP   #1            ; C=1 if A != NO_ERR
             RTS
 
 @COUNTMISMATCH:
             LDA   #ERR_BADPCNT
-            BRA   @END
-            
+            BNE   @END
+         
+            .IFPC02   
 @JMPSPCOMMAND:                  ; use offset from cmd*2
             JMP   (SPDISPATCH,X)
+            .ENDIF
             
 
 
@@ -126,7 +139,12 @@ SMSTATUS:   JSR   GETCSLIST
 
 ; TODO support partitions based on card size
 @STATUS00:  LDA   #4            ; support 4 partitions
+            .IFPC02
             STA   (SMCMDLIST)
+            .ELSE
+            LDY   #0
+            STA   (SMCMDLIST),Y
+            .ENDIF
 
             LDY   #7
 @LOOP00:    LDA   STATUS00DATA-1,Y
@@ -148,7 +166,12 @@ SMSTATUS:   JSR   GETCSLIST
             RTS
 
 @GETDCB:    LDA   #1            ; return 'empty' DCB, one byte
+            .IFPC02
             STA   (SMCMDLIST)
+            .ELSE
+            LDY   #0
+            STA   (SMCMDLIST),Y
+            .ENDIF
             TAY
             LDA   #NO_ERR
             STA   (SMCMDLIST),Y
@@ -164,7 +187,12 @@ SMSTATUS:   JSR   GETCSLIST
 @WRPROT:    JSR   WRPROT
             BCC   @STATUSBYTE   
             ORA   #$04          ; SD card write-protected
-@STATUSBYTE:STA  (SMCMDLIST)
+@STATUSBYTE:.IFPC02
+            STA  (SMCMDLIST)
+            .ELSE
+            LDY   #0
+            STA   (SMCMDLIST),Y
+            .ENDIF
 
             LDY   #1            ; block count, always $00FFFF
             LDA   #$FF
@@ -280,18 +308,18 @@ TRANSLATE:  LDA   DRVNUM,Y
             BEQ   @UNIT3
             CMP   #4
             BEQ   @UNIT4
-            BRA   @BADUNIT      ; only 4 partitions are supported
+            BNE   @BADUNIT      ; only 4 partitions are supported
 
 @UNIT1:     LDA   SLOT16        ; this slot
-            BRA   @STORE
+            BNE   @STORE
 @UNIT2:     LDA   SLOT16
             ORA   #$80          ; drive 1
-            BRA   @STORE
+            BNE   @STORE
 @UNIT3:     LDA   SLOT16
-            DEC   A             ; phantom slot
-            BRA   @STORE
+            SBC   #1             ; phantom slot
+            BNE   @STORE
 @UNIT4:     LDA   SLOT16
-            DEC   A             ; phantom slot
+            SBC   #1             ; phantom slot
             ORA   #$80          ; drive 1
 
 @STORE:     STA   DSNUMBER      ; store in ProDOS variable

README.md

@@ -1,4 +1,5 @@
 # AppleIISd
+
 SD card based ProFile replacement for enhanced Apple IIe and IIgs computers
 
 The **AppleIISd** is a SD card based replaced for the ProFile harddrive. In contrast to other SD card based devices, this card does not replace a Disk II drive. Data is saved directly onto the SD card, not via images on a FAT system, like on other cards. The SD card is accessable with [CiderPress](http://a2ciderpress.com/).
@@ -8,6 +9,7 @@ A Xilinx CPLD is used as a SPI controller and translates, together with the ROM
 The assembler sources are written for CC65. The [schematics](Binary/AppleIISd.pdf) are available as PDF.
 
 ## Features
+
 * works with ProDOS and GS/OS
 * up to 128MB storage space (4x 65535 blocks)
 * ProDOS and Smartport driver in ROM
@@ -18,7 +20,9 @@ The assembler sources are written for CC65. The [schematics](Binary/AppleIISd.pd
 * Skip boot when Open-Apple key is pressed
 
 ## Requirements
+
 The AppleIISd requires an enhanced IIe or IIgs computer. The ROM code uses some 65c02 opcodes and will therefore not work on a II, II+ or unenhanced IIe. It has been tested in the following combinations:
+
 * Apple IIgs Rom 01, GS/OS 6.0.4
 * Apple IIgs Rom 01, Prodos 2.4.1
 * Apple IIgs Rom 01, Prodos 1.9
@@ -27,6 +31,7 @@ The AppleIISd requires an enhanced IIe or IIgs computer. The ROM code uses some
 * Apple IIe enhanced, 64k, Prodos 1.9
 
 ## Binary distribution
+
 The following files in [Binary/](Binary) have been provided to eliminate the need to compile assembler or VHDL sources.
 
 | File | Purpose |
@@ -41,6 +46,7 @@ The following files in [Binary/](Binary) have been provided to eliminate the nee
 | Gerber_Vx.x.zip | Gerber files for different hw revisions |
 
 ## Smartport drive remapping
+
 The AppleIISd features Smartport drivers in ROM to provide more than two drives in both GS/OS and ProDOS.
 
 As ProDOS supports only two drives per slot, additional drives on a Smartport device are mapped to 'phantom slots'. Version prior to version 2 supported only the remapping of drives when the card was in slot 5. Starting with version 2, the remapping seems to work on all slots. The following list shows the assignments as slot/drive, when no other devices are attached:
@@ -56,15 +62,19 @@ As ProDOS supports only two drives per slot, additional drives on a Smartport de
 When more devices are connected, things get a little confusing ;-)
 
 ## Building the sources
+
 Be sure to have the newest version of CC65 (V2.16) and some kind of Make instaled, then type one of the following comands:
-```
+
+```bash
 make                            # generate binaries
 make OPTIONS=mapfile,listing    # generate mapfile and listing, too
 make clean                      # delete binaries
 ```
+
 Alternatively use the VisualStudio solution.
 
 ## Timing
+
 The clock of the SPI bus *SCK* may be derived from either *Phi0* or the *7M* clock. Additionally, the divisor may be 2 to 8.
 
 The following measurements were taken with the divisor set to 2, resulting in *fSCK* of 500kHz and 3.5MHz. Reading of a byte requires that a dummy byte is sent on the bus, before the answer can be read. Therefore the measurement is the time between sending the byte and receiving the answer. The measurement for reading of a whole 512 byte block includes the SD card commands to do so.
@@ -78,7 +88,7 @@ This shows that the required to read a single byte can be reduced significantly
 
 The time for reading a 512 byte block could *only* be halved, but there are for sure opportunities for optimization in the code surrounding the reading.
 
-```
+```asm
 * single byte @ 500kHz
 LDA #$FF
 STA $C0C0
@@ -97,8 +107,8 @@ STA $C0C0
 LDA $C0C0
 ```
 
-
 ## Registers
+
 The control registers of the *AppleIISd* are mapped to the usual I/O space at **$C0n0 - $C0n3**, where n is slot+8. All registers and bits are read/write, except where noted.
 
 | Address | Function        | Default value |
@@ -131,14 +141,15 @@ The control registers of the *AppleIISd* are mapped to the usual I/O space at **
 **INIT** Initialized - This bit is set to 1 when the SD card has been initialized by the firmware. Do not write manually.
 
 ## TODOs
+
 * Much more testing
 * Enable more than 4 volumes under GS/OS
-* Support for 6502 CPUs
+* Support for 6502 CPUs
 * Support for CP/M
 
 ## Known Bugs
-* Programs not startable from partitions 3 and 4 under ProDOS
 
+* Programs not startable from partitions 3 and 4 under ProDOS
 
 ![Front_Img_Smd](Images/Card%20Front%20SMD.jpg)
 ![Front_Img](Images/Card%20Front.jpg)