; ---------------------------------------------------------------------------
; Zero page, Commodore stuff
-ST := $90 ; IEC status byte
-
+VARTAB := $2D ; Pointer to start of BASIC variables
+MEMSIZE := $37 ; Pointer to highest BASIC RAM location (+1)
+TXTPTR := $7A ; Pointer into BASIC source code
TIME := $A0 ; 60 HZ clock
-FNAM_LEN := $B7 ; Length of filename
-SECADR := $B9 ; Secondary address
-DEVNUM := $BA ; Device number
+FNAM_LEN := $B7 ; Length of filename
+SECADR := $B9 ; Secondary address
+DEVNUM := $BA ; Device number
FNAM := $BB ; Pointer to filename
-KEY_COUNT := $C6 ; Number of keys in input buffer
+KEY_COUNT := $C6 ; Number of keys in input buffer
RVS := $C7 ; Reverse flag
-CURS_FLAG := $CC ; 1 = cursor off
-CURS_BLINK := $CD ; Blink counter
-CURS_CHAR := $CE ; Character under the cursor
-CURS_STATE := $CF ; Cursor blink state
-SCREEN_PTR := $D1 ; Pointer to current char in text screen
-CURS_X := $D3 ; Cursor column
-CURS_Y := $D6 ; Cursor row
-CRAM_PTR := $F3 ; Pointer to current char in color RAM
-
-BASIC_BUF := $200 ; Location of command-line
-BASIC_BUF_LEN = 89 ; Maximum length of command-line
+CURS_FLAG := $CC ; 1 = cursor off
+CURS_BLINK := $CD ; Blink counter
+CURS_CHAR := $CE ; Character under the cursor
+CURS_STATE := $CF ; Cursor blink state
+SCREEN_PTR := $D1 ; Pointer to current char in text screen
+CURS_X := $D3 ; Cursor column
+CURS_Y := $D6 ; Cursor row
+CRAM_PTR := $F3 ; Pointer to current char in color RAM
+FREKZP := $FB ; Five unused bytes
+
+BASIC_BUF := $200 ; Location of command-line
+BASIC_BUF_LEN = 89 ; Maximum length of command-line
CHARCOLOR := $286
-CURS_COLOR := $287 ; Color under the cursor
-PALFLAG := $2A6 ; $01 = PAL, $00 = NTSC
-
-
-; ---------------------------------------------------------------------------
-; Kernal routines
+CURS_COLOR := $287 ; Color under the cursor
+PALFLAG := $2A6 ; $01 = PAL, $00 = NTSC
-; Direct entries
-CLRSCR := $E544
-KBDREAD := $E5B4
-NMIEXIT := $FEBC
+KBDREPEAT := $28a
+KBDREPEATRATE := $28b
+KBDREPEATDELAY := $28c
; ---------------------------------------------------------------------------
; Vector and other locations
-IRQVec := $0314
-BRKVec := $0316
-NMIVec := $0318
+IRQVec := $0314
+BRKVec := $0316
+NMIVec := $0318
; ---------------------------------------------------------------------------
; Screen size
; ---------------------------------------------------------------------------
; I/O: VIC
-VIC := $D000
-VIC_SPR0_X := $D000
-VIC_SPR0_Y := $D001
-VIC_SPR1_X := $D002
-VIC_SPR1_Y := $D003
-VIC_SPR2_X := $D004
-VIC_SPR2_Y := $D005
-VIC_SPR3_X := $D006
-VIC_SPR3_Y := $D007
-VIC_SPR4_X := $D008
-VIC_SPR4_Y := $D009
-VIC_SPR5_X := $D00A
-VIC_SPR5_Y := $D00B
-VIC_SPR6_X := $D00C
-VIC_SPR6_Y := $D00D
-VIC_SPR7_X := $D00E
-VIC_SPR7_Y := $D00F
-VIC_SPR_HI_X := $D010
-VIC_SPR_ENA := $D015
-VIC_SPR_EXP_Y := $D017
-VIC_SPR_EXP_X := $D01D
-VIC_SPR_MCOLOR := $D01C
+VIC := $D000
+VIC_SPR0_X := $D000
+VIC_SPR0_Y := $D001
+VIC_SPR1_X := $D002
+VIC_SPR1_Y := $D003
+VIC_SPR2_X := $D004
+VIC_SPR2_Y := $D005
+VIC_SPR3_X := $D006
+VIC_SPR3_Y := $D007
+VIC_SPR4_X := $D008
+VIC_SPR4_Y := $D009
+VIC_SPR5_X := $D00A
+VIC_SPR5_Y := $D00B
+VIC_SPR6_X := $D00C
+VIC_SPR6_Y := $D00D
+VIC_SPR7_X := $D00E
+VIC_SPR7_Y := $D00F
+VIC_SPR_HI_X := $D010
+VIC_SPR_ENA := $D015
+VIC_SPR_EXP_Y := $D017
+VIC_SPR_EXP_X := $D01D
+VIC_SPR_MCOLOR := $D01C
VIC_SPR_BG_PRIO := $D01B
VIC_SPR_MCOLOR0 := $D025
VIC_SPR_MCOLOR1 := $D026
-VIC_SPR0_COLOR := $D027
-VIC_SPR1_COLOR := $D028
-VIC_SPR2_COLOR := $D029
-VIC_SPR3_COLOR := $D02A
-VIC_SPR4_COLOR := $D02B
-VIC_SPR5_COLOR := $D02C
-VIC_SPR6_COLOR := $D02D
-VIC_SPR7_COLOR := $D02E
+VIC_SPR0_COLOR := $D027
+VIC_SPR1_COLOR := $D028
+VIC_SPR2_COLOR := $D029
+VIC_SPR3_COLOR := $D02A
+VIC_SPR4_COLOR := $D02B
+VIC_SPR5_COLOR := $D02C
+VIC_SPR6_COLOR := $D02D
+VIC_SPR7_COLOR := $D02E
-VIC_CTRL1 := $D011
-VIC_CTRL2 := $D016
+VIC_CTRL1 := $D011
+VIC_CTRL2 := $D016
-VIC_HLINE := $D012
+VIC_HLINE := $D012
-VIC_VIDEO_ADR := $D018
+VIC_LPEN_X := $D013
+VIC_LPEN_Y := $D014
-VIC_IRR := $D019 ; Interrupt request register
-VIC_IMR := $D01A ; Interrupt mask register
+VIC_VIDEO_ADR := $D018
+
+VIC_IRR := $D019 ; Interrupt request register
+VIC_IMR := $D01A ; Interrupt mask register
VIC_BORDERCOLOR := $D020
-VIC_BG_COLOR0 := $D021
-VIC_BG_COLOR1 := $D022
-VIC_BG_COLOR2 := $D023
-VIC_BG_COLOR3 := $D024
+VIC_BG_COLOR0 := $D021
+VIC_BG_COLOR1 := $D022
+VIC_BG_COLOR2 := $D023
+VIC_BG_COLOR3 := $D024
; 128 stuff:
-VIC_KBD_128 := $D02F ; Extended kbd bits (visible in 64 mode)
-VIC_CLK_128 := $D030 ; Clock rate register (visible in 64 mode)
+VIC_KBD_128 := $D02F ; Extended kbd bits (visible in 64 mode)
+VIC_CLK_128 := $D030 ; Clock rate register (visible in 64 mode)
; ---------------------------------------------------------------------------
; I/O: SID
-SID := $D400
-SID_S1Lo := $D400
-SID_S1Hi := $D401
-SID_PB1Lo := $D402
-SID_PB1Hi := $D403
-SID_Ctl1 := $D404
-SID_AD1 := $D405
-SID_SUR1 := $D406
-
-SID_S2Lo := $D407
-SID_S2Hi := $D408
-SID_PB2Lo := $D409
-SID_PB2Hi := $D40A
-SID_Ctl2 := $D40B
-SID_AD2 := $D40C
-SID_SUR2 := $D40D
-
-SID_S3Lo := $D40E
-SID_S3Hi := $D40F
-SID_PB3Lo := $D410
-SID_PB3Hi := $D411
-SID_Ctl3 := $D412
-SID_AD3 := $D413
-SID_SUR3 := $D414
-
-SID_FltLo := $D415
-SID_FltHi := $D416
-SID_FltCtl := $D417
-SID_Amp := $D418
-SID_ADConv1 := $D419
-SID_ADConv2 := $D41A
-SID_Noise := $D41B
-SID_Read3 := $D41C
+SID := $D400
+SID_S1Lo := $D400
+SID_S1Hi := $D401
+SID_PB1Lo := $D402
+SID_PB1Hi := $D403
+SID_Ctl1 := $D404
+SID_AD1 := $D405
+SID_SUR1 := $D406
+
+SID_S2Lo := $D407
+SID_S2Hi := $D408
+SID_PB2Lo := $D409
+SID_PB2Hi := $D40A
+SID_Ctl2 := $D40B
+SID_AD2 := $D40C
+SID_SUR2 := $D40D
+
+SID_S3Lo := $D40E
+SID_S3Hi := $D40F
+SID_PB3Lo := $D410
+SID_PB3Hi := $D411
+SID_Ctl3 := $D412
+SID_AD3 := $D413
+SID_SUR3 := $D414
+
+SID_FltLo := $D415
+SID_FltHi := $D416
+SID_FltCtl := $D417
+SID_Amp := $D418
+SID_ADConv1 := $D419
+SID_ADConv2 := $D41A
+SID_Noise := $D41B
+SID_Read3 := $D41C
; ---------------------------------------------------------------------------
; I/O: VDC (128 only)
-VDC_INDEX := $D600
-VDC_DATA := $D601
+VDC_INDEX := $D600
+VDC_DATA := $D601
; ---------------------------------------------------------------------------
-; I/O: CIAs
-
-CIA1 := $DC00
-CIA1_PRA := $DC00
-CIA1_PRB := $DC01
-CIA1_DDRA := $DC02
-CIA1_DDRB := $DC03
-CIA1_TOD10 := $DC08
-CIA1_TODSEC := $DC09
-CIA1_TODMIN := $DC0A
-CIA1_TODHR := $DC0B
-CIA1_ICR := $DC0D
-CIA1_CRA := $DC0E
-CIA1_CRB := $DC0F
-
-CIA2 := $DD00
-CIA2_PRA := $DD00
-CIA2_PRB := $DD01
-CIA2_DDRA := $DD02
-CIA2_DDRB := $DD03
+; I/O: Complex Interface Adapters
+
+CIA1 := $DC00
+CIA1_PRA := $DC00 ; Port A
+CIA1_PRB := $DC01 ; Port B
+CIA1_DDRA := $DC02 ; Data direction register for port A
+CIA1_DDRB := $DC03 ; Data direction register for port B
+CIA1_TA := $DC04 ; 16-bit timer A
+CIA1_TB := $DC06 ; 16-bit timer B
+CIA1_TOD10 := $DC08 ; Time-of-day tenths of a second
+CIA1_TODSEC := $DC09 ; Time-of-day seconds
+CIA1_TODMIN := $DC0A ; Time-of-day minutes
+CIA1_TODHR := $DC0B ; Time-of-day hours
+CIA1_SDR := $DC0C ; Serial data register
+CIA1_ICR := $DC0D ; Interrupt control register
+CIA1_CRA := $DC0E ; Control register for timer A
+CIA1_CRB := $DC0F ; Control register for timer B
+
+CIA2 := $DD00
+CIA2_PRA := $DD00
+CIA2_PRB := $DD01
+CIA2_DDRA := $DD02
+CIA2_DDRB := $DD03
+CIA2_TA := $DD04
+CIA2_TB := $DD06
CIA2_TOD10 := $DD08
CIA2_TODSEC := $DD09
CIA2_TODMIN := $DD0A
CIA2_TODHR := $DD0B
-CIA2_ICR := $DD0D
-CIA2_CRA := $DD0E
-CIA2_CRB := $DD0F
+CIA2_SDR := $DD0C
+CIA2_ICR := $DD0D
+CIA2_CRA := $DD0E
+CIA2_CRB := $DD0F
; ---------------------------------------------------------------------------
; Super CPU
-SCPU_VIC_Bank1 := $D075
-SCPU_Slow := $D07A
-SCPU_Fast := $D07B
+SCPU_VIC_Bank1 := $D075
+SCPU_Slow := $D07A
+SCPU_Fast := $D07B
SCPU_EnableRegs := $D07E
SCPU_DisableRegs:= $D07F
-SCPU_Detect := $D0BC
+SCPU_Detect := $D0BC
; ---------------------------------------------------------------------------
; Processor Port at $01
-LORAM = $01 ; Enable the basic rom
-HIRAM = $02 ; Enable the kernal rom
-IOEN = $04 ; Enable I/O
-CASSDATA = $08 ; Cassette data
-CASSPLAY = $10 ; Cassette: Play
-CASSMOT = $20 ; Cassette motor on
-TP_FAST = $80 ; Switch Rossmoeller TurboProcess to fast mode
-
-RAMONLY = $F8 ; (~(LORAM | HIRAM | IOEN)) & $FF
-
+LORAM = $01 ; Enable the basic rom
+HIRAM = $02 ; Enable the kernal rom
+IOEN = $04 ; Enable I/O
+CASSDATA = $08 ; Cassette data
+CASSPLAY = $10 ; Cassette: Play
+CASSMOT = $20 ; Cassette motor on
+TP_FAST = $80 ; Switch Rossmoeller TurboProcess to fast mode
+RAMONLY = $F8 ; (~(LORAM | HIRAM | IOEN)) & $FF
projects / cc65 / blobdiff