cleanup

TODO.txt

@@ -9,3 +9,4 @@
 * check for KBD whether it's CONFIG_2 && CONFIG_SMALL (float
   etc.)
 * there must be no platform ifdefs in generic files
+* reconstruct pre-CBM1, i.e. CBM1 without the patches

defines.s

@@ -1,6 +1,6 @@
 .if .def(cbmbasic1)
 CBM1 := 1
-.include "defines_cbm.s"
+.include "defines_cbm1.s"
 .elseif .def(osi)
 OSI := 1
 .include "defines_osi.s"
@@ -12,7 +12,7 @@ KIM := 1
 .include "defines_kim.s"
 .elseif .def(cbmbasic2)
 CBM2 := 1
-.include "defines_cbm.s"
+.include "defines_cbm2.s"
 .elseif .def(kbdbasic)
 KBD := 1
 .include "defines_kbd.s"

defines_cbm1.s

@@ -0,0 +1,81 @@
+; oldest known version, no CONFIG_n
+;CONFIG_CBM1_PATCHES := 1 ; ** don't turn off! **
+;CONFIG_CBM_ALL := 1
+;CONFIG_DATAFLG := 1
+;CONFIG_EASTER_EGG := 1
+;CONFIG_FILE := 1; support PRINT#, INPUT#, GET#, CMD
+;CONFIG_IO_MSB := 1 ; all I/O has bit #7 set
+;CONFIG_MONCOUT_DESTROYS_Y := 1
+;CONFIG_NO_CR := 1; terminal doesn't need explicit CRs on line ends
+;CONFIG_NO_LINE_EDITING := 1; support for "@", "_", BEL etc.
+;CONFIG_NO_POKE := 1
+;CONFIG_NO_READ_Y_IS_ZERO_HACK := 1
+;CONFIG_NULL := 1
+;CONFIG_PEEK_SAVE_LINNUM := 1
+;CONFIG_PRINTNULLS := 1; whether PRINTNULLS does anything
+;CONFIG_PRINT_CR := 1 ; print CR when line end reached
+;CONFIG_RAM := 1
+;CONFIG_ROR_WORKAROUND := 1
+;CONFIG_SAFE_NAMENOTFOUND := 1
+;CONFIG_SCRTCH_ORDER := 1
+;CONFIG_SCRTCH_ORDER := 2
+;CONFIG_SCRTCH_ORDER := 3
+;CONFIG_SMALL := 1
+;CONFIG_SPC_IS_CRSR_RIGHT := 1; always print CRSR RIGHT for SPC() (otherwise only for screen output)
+
+; configuration
+; oldest known version, no CONFIG_n
+
+CONFIG_CBM_ALL := 1
+
+CONFIG_FILE := 1; support PRINT#, INPUT#, GET#, CMD
+CONFIG_NO_CR := 1; terminal doesn't need explicit CRs on line ends
+CONFIG_NO_LINE_EDITING := 1; support for "@", "_", BEL etc.
+CONFIG_SCRTCH_ORDER := 2
+
+CONFIG_CBM1_PATCHES := 1 ; ** don't turn off! **
+CONFIG_DATAFLG := 1
+CONFIG_PRINTNULLS := 1; whether PRINTNULLS does anything
+CONFIG_SPC_IS_CRSR_RIGHT := 1; always print CRSR RIGHT for SPC() (otherwise only for screen output)
+
+; zero page
+ZP_START0 = $00
+ZP_START0A = $04
+ZP_START1 = $5A
+ZP_START2 = $65
+
+; extra ZP variables
+CURDVC			:= $0003
+Z96				:= $020C
+USR				:= GORESTART
+
+
+; constants
+SPACE_FOR_GOSUB := $36
+STACK_TOP		:= $FC
+NULL_MAX		:= $0A
+MAX_EXPON		:= 12 ; XXX override
+
+RAMSTART2		:= $0400
+
+; magic memory locations
+ENTROPY = $9044
+
+; monitor functions
+OPEN	:= $FFC0
+CLOSE	:= $FFC3
+CHKIN	:= $FFC6
+CHKOUT	:= $FFC9
+CLRCH	:= $FFCC
+CHRIN	:= $FFCF
+CHROUT	:= $FFD2
+LOAD	:= $FFD5
+SAVE	:= $FFD8
+VERIFY	:= $FFDB
+SYS		:= $FFDE
+ISCNTC	:= $FFE1
+GETIN	:= $FFE4
+CLALL	:= $FFE7
+LE7F3	:= $E7F3; for CBM1
+MONCOUT	:= CHROUT
+MONRDKEY := GETIN

defines_cbm2.s

@@ -1,5 +1,4 @@
 ; configuration
-; common:
 CONFIG_CBM_ALL := 1
 
 CONFIG_FILE := 1; support PRINT#, INPUT#, GET#, CMD
@@ -7,34 +6,12 @@ CONFIG_NO_CR := 1; terminal doesn't need explicit CRs on line ends
 CONFIG_NO_LINE_EDITING := 1; support for "@", "_", BEL etc.
 CONFIG_SCRTCH_ORDER := 2
 
-.ifdef CBM1
-CONFIG_BUG_GET_ERROR := 1; treat GET error like READ error
-CONFIG_CBM1_PATCHES := 1 ; ** don't turn off! **
-CONFIG_DATAFLAG := 1
-CONFIG_PRINTNULLS := 1; whether PRINTNULLS does anything
-CONFIG_SPC_IS_CRSR_RIGHT := 1; always print CRSR RIGHT for SPC() (otherwise only for screen output)
-.else
 CONFIG_2A := 1
 
-CONFIG_DATAFLAG := 1
+CONFIG_DATAFLG := 1
 CONFIG_EASTER_EGG := 1
 CONFIG_NO_READ_Y_IS_ZERO_HACK := 1
 CONFIG_PEEK_SAVE_LINNUM := 1
-.endif
-
-.ifdef CBM1
-; zero page
-ZP_START0 = $00
-ZP_START0A = $04
-ZP_START1 = $5A
-ZP_START2 = $65
-
-; extra ZP variables
-Z03				:= $0003
-Z96				:= $020C
-USR				:= GORESTART
-
-.else
 
 ; zero page
 ZP_START0 = $00
@@ -43,7 +20,7 @@ ZP_START1 = $03
 ZP_START2 = $13
 
 ; extra/override ZP variables
-Z03				:= $000E
+CURDVC			:= $000E
 Z96				:= $0096
 POSX			:= $00C6
 TXPSV			:= LASTOP
@@ -52,29 +29,16 @@ USR				:= GORESTART ; XXX
 ; inputbuffer
 INPUTBUFFER     := $0200
 
-.endif
-
 ; constants
-.ifdef CBM1
-SPACE_FOR_GOSUB := $36
-STACK_TOP		:= $FC
-NULL_MAX		:= $0A
-MAX_EXPON		:= 12 ; XXX override
-.else
 SPACE_FOR_GOSUB := $3E
 STACK_TOP		:= $FA
 WIDTH			:= 40
 WIDTH2			:= 30
-.endif
 
 RAMSTART2		:= $0400
 
 ; magic memory locations
-.ifdef CBM1
-ENTROPY = $9044
-.else
 ENTROPY = $E844
-.endif
 
 ; monitor functions
 OPEN	:= $FFC0

defines_osi.s

@@ -1,7 +1,7 @@
 ; configuration
 CONFIG_10A := 1
 
-CONFIG_DATAFLAG := 1
+CONFIG_DATAFLG := 1
 CONFIG_NULL := 1
 CONFIG_PRINT_CR := 1 ; print CR when line end reached
 CONFIG_SCRTCH_ORDER := 3

init.s

@@ -120,7 +120,7 @@ L4098:
         txa
         sta     SHIFTSIGNEXT
   .ifdef CONFIG_CBM_ALL
-        sta     Z03
+        sta     CURDVC
   .endif
         sta     LASTPT+1
   .if .defined(CONFIG_NULL) || .defined(CONFIG_PRINTNULLS)

inline.s

@@ -93,7 +93,7 @@ L2453:
 GETLN:
     .ifdef CONFIG_FILE
         jsr     CHRIN
-        ldy     Z03
+        ldy     CURDVC
         bne     L2465
     .else
         jsr     MONRDKEY

input.s

@@ -9,7 +9,9 @@ INPUTERR:
         lda     INPUTFLG
         beq     RESPERR	; INPUT
 .ifndef CONFIG_SMALL
-.ifndef CONFIG_BUG_GET_ERROR
+.ifdef CONFIG_10A
+; without this, it treats GET errors
+; like READ errors
         bmi     L2A63	; READ
         ldy     #$FF	; GET
         bne     L2A67
@@ -30,7 +32,7 @@ SYNERR4:
         jmp     SYNERR
 RESPERR:
 .ifdef CONFIG_FILE
-        lda     Z03
+        lda     CURDVC
         beq     LCA8F
         ldx     #ERR_BADDATA
         jmp     ERROR
@@ -61,7 +63,7 @@ GET:
         lda     #','
         jsr     SYNCHR
         jsr     CHKIN
-        stx     Z03
+        stx     CURDVC
 LCAB6:
 .endif
         ldx     #<(INPUTBUFFER+1)
@@ -76,7 +78,7 @@ LCAB6:
         jsr     PROCESS_INPUT_LIST
 ; CBM: if GET#, then switch input back
 .ifdef CONFIG_FILE
-        ldx     Z03
+        ldx     CURDVC
         bne     LCAD8
 .endif
         rts
@@ -91,14 +93,14 @@ INPUTH:
         lda     #$2C
         jsr     SYNCHR
         jsr     CHKIN
-        stx     Z03
+        stx     CURDVC
         jsr     L2A9E
 LCAD6:
-        lda     Z03
+        lda     CURDVC
 LCAD8:
         jsr     CLRCH
         ldx     #$00
-        stx     Z03
+        stx     CURDVC
         rts
 LCAE0:
 .endif
@@ -130,7 +132,7 @@ LCAF8:
         bmi     L2ABE
 .else
   .ifdef CONFIG_FILE
-        lda     Z03
+        lda     CURDVC
         beq     LCB0C
         lda     Z96
         and     #$02
@@ -142,7 +144,7 @@ LCB0C:
         lda     INPUTBUFFER
         bne     L2ABE
   .ifdef CONFIG_FILE
-        lda     Z03
+        lda     CURDVC
         bne     LCAF8
   .endif
   .ifdef CONFIG_CBM1_PATCHES
@@ -161,7 +163,7 @@ NXIN:
         jmp     LE86C
 .else
   .ifdef CONFIG_FILE
-        lda     Z03
+        lda     CURDVC
         bne     LCB21
   .endif
         jsr     OUTQUES	; '?'
@@ -265,7 +267,7 @@ L2AF0:
 .endif
         bmi     FINDATA
 .ifdef CONFIG_FILE
-        lda     Z03
+        lda     CURDVC
         bne     LCB64
 .endif
 .ifdef KBD
@@ -393,7 +395,7 @@ L2B94:
         lda     (INPTR),y
         beq     L2BA1
 .ifdef CONFIG_FILE
-        lda     Z03
+        lda     CURDVC
         bne     L2BA1
 .endif
         lda     #<ERREXTRA

misc1.s

@@ -222,7 +222,7 @@ CMD:
 LC98F:
         php
         jsr     CHKOUT
-        stx     Z03
+        stx     CURDVC
         plp
         jmp     PRINT
 .endif

print.s

@@ -91,7 +91,7 @@ L29B9:
 	.endif
   .endif
   .ifdef CONFIG_FILE
-        lda     Z03
+        lda     CURDVC
         bne     L29DD
   .endif
 .endif
@@ -99,7 +99,7 @@ L29B9:
 
 CRDO:
 .if .def(CONFIG_PRINTNULLS) && .def(CONFIG_FILE)
-        lda     Z03
+        lda     CURDVC
         bne     LC9D8
         sta     $05
 LC9D8:
@@ -125,7 +125,7 @@ PRINTNULLS:
     ; CBM1 had NULL support and ignores
     ; it when not targeting the screen,
     ; CBM2 dropped it completely.
-        lda     Z03
+        lda     CURDVC
         bne     L29DD
     .endif
         txa
@@ -270,7 +270,7 @@ L2A22:
 OUTSP:
 .ifdef CONFIG_FILE
   .ifndef CONFIG_SPC_IS_CRSR_RIGHT
-        lda     Z03
+        lda     CURDVC
         beq     LCA40
         lda     #$20
         .byte   $2C
@@ -306,7 +306,7 @@ OUTDO:
 LCA5A:
         lda     POSX
         beq     L2A4E
-        lda     Z03
+        lda     CURDVC
         bne     L2A4E
         dec     POSX
 LCA64:
@@ -318,7 +318,7 @@ LCA64:
 .endif
 LCA6A:
 .ifdef CONFIG_CBM1_PATCHES
-        lda     Z03
+        lda     CURDVC
         jsr     PATCH6
         nop
 .endif

program.s

@@ -21,11 +21,11 @@ MEMERR:
 ERROR:
         lsr     Z14
 .ifdef CONFIG_FILE
-        lda     Z03       ; output
+        lda     CURDVC    ; output
         beq     LC366     ; is screen
         jsr     CLRCH     ; otherwise redirect output back to screen
         lda     #$00
-        sta     Z03
+        sta     CURDVC
 LC366:
 .endif
         jsr     CRDO
@@ -695,7 +695,7 @@ L25A6:
 L25A6X:
 .endif
         ldy     #$01
-.ifdef CONFIG_DATAFLAG
+.ifdef CONFIG_DATAFLG
         sty     DATAFLG
 .endif
         lda     (LOWTRX),y
@@ -730,7 +730,7 @@ L25CA:
         and     #$7F
 L25CE:
         jsr     OUTDO
-.ifdef CONFIG_DATAFLAG
+.ifdef CONFIG_DATAFLG
         cmp     #$22
         bne     LA519
         lda     DATAFLG
@@ -760,7 +760,7 @@ L25E5:
         jmp     RESTART
 L25E8:
         bpl     L25CE
-.ifdef CONFIG_DATAFLAG
+.ifdef CONFIG_DATAFLG
         cmp     #$FF
         beq     L25CE
         bit     DATAFLG