From 23b7a69acb6cbce6b1e12a3bc25023ccfc048777 Mon Sep 17 00:00:00 2001 From: Terence Boldt Date: Fri, 31 Dec 2021 13:09:53 -0500 Subject: [PATCH] Add slot detection for Shell --- Apple2/Shell.asm | 70 ++++++--- Apple2/Shell.bin | Bin 305 -> 356 bytes Apple2/Shell.lst | 394 +++++++++++++++++++++++++---------------------- 3 files changed, 264 insertions(+), 200 deletions(-) diff --git a/Apple2/Shell.asm b/Apple2/Shell.asm index bdd2d5a..7e7f678 100755 --- a/Apple2/Shell.asm +++ b/Apple2/Shell.asm @@ -11,13 +11,10 @@ IOError = $27 NoDevice = $28 WriteProtect = $2B -; hard code slot to 7 for now, will make it auto-detect later -SLOT = 7 - -InputByte = $c08e+SLOT*$10 -OutputByte = $c08d+SLOT*$10 -InputFlags = $c08b+SLOT*$10 -OutputFlags = $c087+SLOT*$10 +InputByte = $c08e +OutputByte = $c08d +InputFlags = $c08b +OutputFlags = $c087 ResetCommand = $00 ReadBlockCommand = $01 @@ -49,11 +46,46 @@ htab80 = $057b BasCalc = $fbc1 LastChar = $06 - +SlotL = $fe +SlotH = $ff ESC = $9b .org $2000 + ldx #$07 ; start at slot 7 +DetectSlot: + ldy #$00 + lda #$fc + sta SlotL + txa + ora #$c0 + sta SlotH + lda (SlotL),y + bne nextSlot + iny + lda (SlotL),y + bne nextSlot + iny + lda (SlotL),y + cmp #$17 + bne nextSlot + iny + lda (SlotL),y + cmp #$14 + bne nextSlot + txa + asl + asl + asl + asl + tax + clc + bcc Start +nextSlot: + dex + bne DetectSlot + rts Start: + lda #$8d jsr $c300 ; force 80 columns lda LastChar pha @@ -134,46 +166,46 @@ moveUp: SendByte: pha waitWrite: - lda InputFlags + lda InputFlags,x rol rol bcs waitWrite pla - sta OutputByte + sta OutputByte,x lda #$1e ; set bit 0 low to indicate write started - sta OutputFlags + sta OutputFlags,x finishWrite: - lda InputFlags + lda InputFlags,x rol rol bcc finishWrite lda #$1f - sta OutputFlags + sta OutputFlags,x rts GetByte: bit Keyboard ; skip byte read if key pressed bcc keyPressed lda #$1d ;set read flag low - sta OutputFlags + sta OutputFlags,x waitRead: - lda InputFlags + lda InputFlags,x rol bcc readByte bit Keyboard ;keypress will abort waiting to read bpl waitRead keyPressed: lda #$1f ;set all flags high and exit - sta OutputFlags + sta OutputFlags,x sec ;failure rts readByte: - lda InputByte + lda InputByte,x pha lda #$1f ;set all flags high - sta OutputFlags + sta OutputFlags,x finishRead: - lda InputFlags + lda InputFlags,x rol bcc finishRead pla diff --git a/Apple2/Shell.bin b/Apple2/Shell.bin index 514700a30ae27cde0fc4efb53dd10611bb1c5597..6d9daf3923d1eeba0d63afa94cfc50fb8f12cfe5 100644 GIT binary patch literal 356 zcmZ3)zJOunpVog}oCjL}Z~S*b<^+%s2NEa6F9?7rkqew%TtKi&Vgk#l3zrgB_9`$O zUdra7BXD3PgTf_+m7G9A!B-)pl`TQxgTe-_lMEj$Jrw*EGfsMZusRv`!R4g$2hEcq zAG}UFeegRO`XNZ+?Oz2sMIT=U9fkt}XVx+t(5wd<0W=RNl%Npt2OG}!ltsecz5^a$CP>GGUl|e!YpYqkR;&#@FoAh($bpR-t!yVB2=JUdAi#Ta efdI?N1_3V51|LsFO?e_+aUwATu#iuKu-x zkCcKA!vTRaYZ(q`)&ms+bpeGE6e9j8fF*%CT2*?hSrI%{g@eBlJSCuNkQ!wmeN1&J zLegXH?*m#|8-8Z={ynf#uJ`)^Fn_|&mGVG#0?^J00xK0|q2d#GK#uqdma|A$`|p4U Xn7Q`%WN}7qHZes_c^|RK9*i;oK2uj< diff --git a/Apple2/Shell.lst b/Apple2/Shell.lst index 96218a7..b95e878 100644 --- a/Apple2/Shell.lst +++ b/Apple2/Shell.lst @@ -15,13 +15,10 @@ Current file: Shell.asm 000000r 1 NoDevice = $28 000000r 1 WriteProtect = $2B 000000r 1 -000000r 1 ; hard code slot to 7 for now, will make it auto-detect later -000000r 1 SLOT = 7 -000000r 1 -000000r 1 InputByte = $c08e+SLOT*$10 -000000r 1 OutputByte = $c08d+SLOT*$10 -000000r 1 InputFlags = $c08b+SLOT*$10 -000000r 1 OutputFlags = $c087+SLOT*$10 +000000r 1 InputByte = $c08e +000000r 1 OutputByte = $c08d +000000r 1 InputFlags = $c08b +000000r 1 OutputFlags = $c087 000000r 1 000000r 1 ResetCommand = $00 000000r 1 ReadBlockCommand = $01 @@ -53,180 +50,215 @@ Current file: Shell.asm 000000r 1 BasCalc = $fbc1 000000r 1 000000r 1 LastChar = $06 -000000r 1 +000000r 1 SlotL = $fe +000000r 1 SlotH = $ff 000000r 1 ESC = $9b 000000r 1 000000r 1 .org $2000 -002000 1 Start: -002000 1 20 00 C3 jsr $c300 ; force 80 columns -002003 1 A5 06 lda LastChar -002005 1 48 pha -002006 1 2C 10 C0 bit ClearKeyboard -002009 1 A9 00 lda #ResetCommand -00200B 1 20 9F 20 jsr SendByte -00200E 1 A9 09 lda #ShellCommand -002010 1 20 9F 20 jsr SendByte -002013 1 20 1A 20 jsr DumpOutput -002016 1 68 pla -002017 1 85 06 sta LastChar -002019 1 60 rts -00201A 1 -00201A 1 DumpOutput: -00201A 1 20 BD 20 jsr GetByte -00201D 1 B0 2A bcs checkInput -00201F 1 C9 00 cmp #$00 -002021 1 F0 39 beq endOutput -002023 1 48 pha -002024 1 20 1C 21 jsr ClearCursor -002027 1 68 pla -002028 1 C9 48 cmp #'H' -00202A 1 F0 3A beq setColumn -00202C 1 C9 56 cmp #'V' -00202E 1 F0 44 beq setRow -002030 1 C9 43 cmp #'C' -002032 1 F0 29 beq clearScreen -002034 1 C9 54 cmp #'T' -002036 1 F0 4A beq setTop -002038 1 C9 42 cmp #'B' -00203A 1 F0 4E beq setBottom -00203C 1 C9 55 cmp #'U' -00203E 1 F0 52 beq moveUp -002040 1 20 ED FD jsr PrintChar -002043 1 20 EB 20 jsr SetCursor -002046 1 4C 1A 20 jmp DumpOutput -002049 1 checkInput: -002049 1 2C 00 C0 bit Keyboard ;check for keypress -00204C 1 10 CC bpl DumpOutput ;keep dumping output if no keypress -00204E 1 AD 00 C0 lda Keyboard ;send keypress to RPi -002051 1 29 7F and #$7f -002053 1 20 9F 20 jsr SendByte -002056 1 2C 10 C0 bit ClearKeyboard -002059 1 4C 1A 20 jmp DumpOutput -00205C 1 endOutput: -00205C 1 60 rts -00205D 1 clearScreen: -00205D 1 20 58 FC jsr Home -002060 1 20 EB 20 jsr SetCursor -002063 1 4C 1A 20 jmp DumpOutput -002066 1 setColumn: -002066 1 20 BD 20 jsr GetByte -002069 1 85 24 sta htab -00206B 1 8D 7B 05 sta htab80 -00206E 1 20 EB 20 jsr SetCursor -002071 1 4C 1A 20 jmp DumpOutput -002074 1 setRow: -002074 1 20 BD 20 jsr GetByte -002077 1 85 25 sta vtab -002079 1 20 C1 FB jsr BasCalc -00207C 1 20 EB 20 jsr SetCursor -00207F 1 4C 1A 20 jmp DumpOutput -002082 1 setTop: -002082 1 20 BD 20 jsr GetByte -002085 1 85 22 sta $22 -002087 1 4C 1A 20 jmp DumpOutput -00208A 1 setBottom: -00208A 1 20 BD 20 jsr GetByte -00208D 1 85 23 sta $23 -00208F 1 4C 1A 20 jmp DumpOutput -002092 1 moveUp: -002092 1 C6 25 dec vtab -002094 1 A5 25 lda vtab -002096 1 20 C1 FB jsr BasCalc -002099 1 20 EB 20 jsr SetCursor -00209C 1 4C 1A 20 jmp DumpOutput -00209F 1 -00209F 1 SendByte: -00209F 1 48 pha -0020A0 1 waitWrite: -0020A0 1 AD FB C0 lda InputFlags -0020A3 1 2A rol -0020A4 1 2A rol -0020A5 1 B0 F9 bcs waitWrite -0020A7 1 68 pla -0020A8 1 8D FD C0 sta OutputByte -0020AB 1 A9 1E lda #$1e ; set bit 0 low to indicate write started -0020AD 1 8D F7 C0 sta OutputFlags -0020B0 1 finishWrite: -0020B0 1 AD FB C0 lda InputFlags -0020B3 1 2A rol -0020B4 1 2A rol -0020B5 1 90 F9 bcc finishWrite -0020B7 1 A9 1F lda #$1f -0020B9 1 8D F7 C0 sta OutputFlags -0020BC 1 60 rts -0020BD 1 -0020BD 1 GetByte: -0020BD 1 2C 00 C0 bit Keyboard ; skip byte read if key pressed -0020C0 1 90 10 bcc keyPressed -0020C2 1 A9 1D lda #$1d ;set read flag low -0020C4 1 8D F7 C0 sta OutputFlags -0020C7 1 waitRead: -0020C7 1 AD FB C0 lda InputFlags -0020CA 1 2A rol -0020CB 1 90 0C bcc readByte -0020CD 1 2C 00 C0 bit Keyboard ;keypress will abort waiting to read -0020D0 1 10 F5 bpl waitRead -0020D2 1 keyPressed: -0020D2 1 A9 1F lda #$1f ;set all flags high and exit -0020D4 1 8D F7 C0 sta OutputFlags -0020D7 1 38 sec ;failure -0020D8 1 60 rts -0020D9 1 readByte: -0020D9 1 AD FE C0 lda InputByte -0020DC 1 48 pha -0020DD 1 A9 1F lda #$1f ;set all flags high -0020DF 1 8D F7 C0 sta OutputFlags -0020E2 1 finishRead: -0020E2 1 AD FB C0 lda InputFlags -0020E5 1 2A rol -0020E6 1 90 FA bcc finishRead -0020E8 1 68 pla -0020E9 1 18 clc ;success -0020EA 1 end: -0020EA 1 60 rts -0020EB 1 -0020EB 1 SetCursor: -0020EB 1 AD 7B 05 lda htab80 ;get horizontal location / 2 -0020EE 1 4A lsr -0020EF 1 A8 tay -0020F0 1 AD 55 C0 lda TextPage2 -0020F3 1 90 03 bcc setChar -0020F5 1 AD 54 C0 lda TextPage1 -0020F8 1 setChar: -0020F8 1 B1 28 lda (BasL),y -0020FA 1 85 06 sta LastChar ; save so ClearCursor will pick it up -0020FC 1 C9 E0 cmp #$e0 -0020FE 1 10 0C bpl lowerCase -002100 1 C9 C0 cmp #$c0 -002102 1 10 0D bpl upperCase -002104 1 C9 A0 cmp #$a0 -002106 1 10 04 bpl symbol -002108 1 C9 80 cmp #$80 -00210A 1 10 0A bpl noop -00210C 1 symbol: -00210C 1 lowerCase: -00210C 1 invert: -00210C 1 49 80 eor #$80 -00210E 1 4C 16 21 jmp storeChar -002111 1 upperCase: -002111 1 29 1F and #$1f -002113 1 4C 16 21 jmp storeChar -002116 1 noop: -002116 1 storeChar: -002116 1 91 28 sta (BasL),y -002118 1 AD 54 C0 lda TextPage1 -00211B 1 60 rts -00211C 1 -00211C 1 ClearCursor: -00211C 1 AD 7B 05 lda htab80 ;get horizontal location / 2 -00211F 1 4A lsr -002120 1 A8 tay -002121 1 AD 55 C0 lda TextPage2 -002124 1 90 03 bcc restoreChar -002126 1 AD 54 C0 lda TextPage1 -002129 1 restoreChar: -002129 1 A5 06 lda LastChar -00212B 1 91 28 sta (BasL),y -00212D 1 AD 54 C0 lda TextPage1 -002130 1 60 rts -002130 1 +002000 1 A2 07 ldx #$07 ; start at slot 7 +002002 1 DetectSlot: +002002 1 A0 00 ldy #$00 +002004 1 A9 FC lda #$fc +002006 1 85 FE sta SlotL +002008 1 8A txa +002009 1 09 C0 ora #$c0 +00200B 1 85 FF sta SlotH +00200D 1 B1 FE lda (SlotL),y +00200F 1 D0 1C bne nextSlot +002011 1 C8 iny +002012 1 B1 FE lda (SlotL),y +002014 1 D0 17 bne nextSlot +002016 1 C8 iny +002017 1 B1 FE lda (SlotL),y +002019 1 C9 17 cmp #$17 +00201B 1 D0 10 bne nextSlot +00201D 1 C8 iny +00201E 1 B1 FE lda (SlotL),y +002020 1 C9 14 cmp #$14 +002022 1 D0 09 bne nextSlot +002024 1 8A txa +002025 1 0A asl +002026 1 0A asl +002027 1 0A asl +002028 1 0A asl +002029 1 AA tax +00202A 1 18 clc +00202B 1 90 04 bcc Start +00202D 1 nextSlot: +00202D 1 CA dex +00202E 1 D0 D2 bne DetectSlot +002030 1 60 rts +002031 1 Start: +002031 1 A9 8D lda #$8d +002033 1 20 00 C3 jsr $c300 ; force 80 columns +002036 1 A5 06 lda LastChar +002038 1 48 pha +002039 1 2C 10 C0 bit ClearKeyboard +00203C 1 A9 00 lda #ResetCommand +00203E 1 20 D2 20 jsr SendByte +002041 1 A9 09 lda #ShellCommand +002043 1 20 D2 20 jsr SendByte +002046 1 20 4D 20 jsr DumpOutput +002049 1 68 pla +00204A 1 85 06 sta LastChar +00204C 1 60 rts +00204D 1 +00204D 1 DumpOutput: +00204D 1 20 F0 20 jsr GetByte +002050 1 B0 2A bcs checkInput +002052 1 C9 00 cmp #$00 +002054 1 F0 39 beq endOutput +002056 1 48 pha +002057 1 20 4F 21 jsr ClearCursor +00205A 1 68 pla +00205B 1 C9 48 cmp #'H' +00205D 1 F0 3A beq setColumn +00205F 1 C9 56 cmp #'V' +002061 1 F0 44 beq setRow +002063 1 C9 43 cmp #'C' +002065 1 F0 29 beq clearScreen +002067 1 C9 54 cmp #'T' +002069 1 F0 4A beq setTop +00206B 1 C9 42 cmp #'B' +00206D 1 F0 4E beq setBottom +00206F 1 C9 55 cmp #'U' +002071 1 F0 52 beq moveUp +002073 1 20 ED FD jsr PrintChar +002076 1 20 1E 21 jsr SetCursor +002079 1 4C 4D 20 jmp DumpOutput +00207C 1 checkInput: +00207C 1 2C 00 C0 bit Keyboard ;check for keypress +00207F 1 10 CC bpl DumpOutput ;keep dumping output if no keypress +002081 1 AD 00 C0 lda Keyboard ;send keypress to RPi +002084 1 29 7F and #$7f +002086 1 20 D2 20 jsr SendByte +002089 1 2C 10 C0 bit ClearKeyboard +00208C 1 4C 4D 20 jmp DumpOutput +00208F 1 endOutput: +00208F 1 60 rts +002090 1 clearScreen: +002090 1 20 58 FC jsr Home +002093 1 20 1E 21 jsr SetCursor +002096 1 4C 4D 20 jmp DumpOutput +002099 1 setColumn: +002099 1 20 F0 20 jsr GetByte +00209C 1 85 24 sta htab +00209E 1 8D 7B 05 sta htab80 +0020A1 1 20 1E 21 jsr SetCursor +0020A4 1 4C 4D 20 jmp DumpOutput +0020A7 1 setRow: +0020A7 1 20 F0 20 jsr GetByte +0020AA 1 85 25 sta vtab +0020AC 1 20 C1 FB jsr BasCalc +0020AF 1 20 1E 21 jsr SetCursor +0020B2 1 4C 4D 20 jmp DumpOutput +0020B5 1 setTop: +0020B5 1 20 F0 20 jsr GetByte +0020B8 1 85 22 sta $22 +0020BA 1 4C 4D 20 jmp DumpOutput +0020BD 1 setBottom: +0020BD 1 20 F0 20 jsr GetByte +0020C0 1 85 23 sta $23 +0020C2 1 4C 4D 20 jmp DumpOutput +0020C5 1 moveUp: +0020C5 1 C6 25 dec vtab +0020C7 1 A5 25 lda vtab +0020C9 1 20 C1 FB jsr BasCalc +0020CC 1 20 1E 21 jsr SetCursor +0020CF 1 4C 4D 20 jmp DumpOutput +0020D2 1 +0020D2 1 SendByte: +0020D2 1 48 pha +0020D3 1 waitWrite: +0020D3 1 BD 8B C0 lda InputFlags,x +0020D6 1 2A rol +0020D7 1 2A rol +0020D8 1 B0 F9 bcs waitWrite +0020DA 1 68 pla +0020DB 1 9D 8D C0 sta OutputByte,x +0020DE 1 A9 1E lda #$1e ; set bit 0 low to indicate write started +0020E0 1 9D 87 C0 sta OutputFlags,x +0020E3 1 finishWrite: +0020E3 1 BD 8B C0 lda InputFlags,x +0020E6 1 2A rol +0020E7 1 2A rol +0020E8 1 90 F9 bcc finishWrite +0020EA 1 A9 1F lda #$1f +0020EC 1 9D 87 C0 sta OutputFlags,x +0020EF 1 60 rts +0020F0 1 +0020F0 1 GetByte: +0020F0 1 2C 00 C0 bit Keyboard ; skip byte read if key pressed +0020F3 1 90 10 bcc keyPressed +0020F5 1 A9 1D lda #$1d ;set read flag low +0020F7 1 9D 87 C0 sta OutputFlags,x +0020FA 1 waitRead: +0020FA 1 BD 8B C0 lda InputFlags,x +0020FD 1 2A rol +0020FE 1 90 0C bcc readByte +002100 1 2C 00 C0 bit Keyboard ;keypress will abort waiting to read +002103 1 10 F5 bpl waitRead +002105 1 keyPressed: +002105 1 A9 1F lda #$1f ;set all flags high and exit +002107 1 9D 87 C0 sta OutputFlags,x +00210A 1 38 sec ;failure +00210B 1 60 rts +00210C 1 readByte: +00210C 1 BD 8E C0 lda InputByte,x +00210F 1 48 pha +002110 1 A9 1F lda #$1f ;set all flags high +002112 1 9D 87 C0 sta OutputFlags,x +002115 1 finishRead: +002115 1 BD 8B C0 lda InputFlags,x +002118 1 2A rol +002119 1 90 FA bcc finishRead +00211B 1 68 pla +00211C 1 18 clc ;success +00211D 1 end: +00211D 1 60 rts +00211E 1 +00211E 1 SetCursor: +00211E 1 AD 7B 05 lda htab80 ;get horizontal location / 2 +002121 1 4A lsr +002122 1 A8 tay +002123 1 AD 55 C0 lda TextPage2 +002126 1 90 03 bcc setChar +002128 1 AD 54 C0 lda TextPage1 +00212B 1 setChar: +00212B 1 B1 28 lda (BasL),y +00212D 1 85 06 sta LastChar ; save so ClearCursor will pick it up +00212F 1 C9 E0 cmp #$e0 +002131 1 10 0C bpl lowerCase +002133 1 C9 C0 cmp #$c0 +002135 1 10 0D bpl upperCase +002137 1 C9 A0 cmp #$a0 +002139 1 10 04 bpl symbol +00213B 1 C9 80 cmp #$80 +00213D 1 10 0A bpl noop +00213F 1 symbol: +00213F 1 lowerCase: +00213F 1 invert: +00213F 1 49 80 eor #$80 +002141 1 4C 49 21 jmp storeChar +002144 1 upperCase: +002144 1 29 1F and #$1f +002146 1 4C 49 21 jmp storeChar +002149 1 noop: +002149 1 storeChar: +002149 1 91 28 sta (BasL),y +00214B 1 AD 54 C0 lda TextPage1 +00214E 1 60 rts +00214F 1 +00214F 1 ClearCursor: +00214F 1 AD 7B 05 lda htab80 ;get horizontal location / 2 +002152 1 4A lsr +002153 1 A8 tay +002154 1 AD 55 C0 lda TextPage2 +002157 1 90 03 bcc restoreChar +002159 1 AD 54 C0 lda TextPage1 +00215C 1 restoreChar: +00215C 1 A5 06 lda LastChar +00215E 1 91 28 sta (BasL),y +002160 1 AD 54 C0 lda TextPage1 +002163 1 60 rts +002163 1