initial asm includes for c65 and mega65

asminc/c65.inc

@@ -0,0 +1,235 @@
+
+; ---------------------------------------------------------------------------
+; Zero page, Commodore stuff
+
+TXTPTR          := $3C          ; Pointer into BASIC source code
+STATUS          := $90          ; Kernal I/O completion status
+FNAM_LEN        := $B7          ; Length of filename
+SECADR          := $B9          ; Secondary address
+DEVNUM          := $BA          ; Device number
+FNAM            := $BB          ; Address of filename
+FNAM_BANK       := $BE          ; Bank for filename
+KEY_COUNT       := $D0          ; Number of keys in input buffer
+FKEY_COUNT      := $D1          ; Characters for function key
+MODE            := $D7          ; 40-/80-column mode (bit 7: 80 columns)
+GRAPHM          := $D8          ; Graphics mode flags (bits 5-7)
+CHARDIS         := $D9          ; Bit 2 shadow for location $01
+CURS_X          := $EC          ; Cursor column
+CURS_Y          := $EB          ; Cursor row
+SCREEN_PTR      := $E0          ; Pointer to current char in text screen
+CRAM_PTR        := $E2          ; Pointer to current char in color RAM
+CHARCOLOR       := $F1
+RVS             := $F3          ; Reverse output flag
+SCROLL          := $F8          ; Disable scrolling flag
+
+BASIC_BUF       := $0200        ; Location of command-line
+BASIC_BUF_LEN   = 161           ; Maximum length of command-line
+
+FKEY_LEN        := $1000        ; Function key lengths
+FKEY_TEXT       := $100A        ; Function key texts
+
+PALFLAG         := $1103        ; $FF=PAL, $00=NTSC
+INIT_STATUS     := $1104        ; Flags: Reset/Restore initiation status
+TIME            := $110C        ; 60HZ clock
+
+KBDREPEAT       := $111a
+KBDREPEATRATE   := $111b
+KBDREPEATDELAY  := $111c
+
+; ---------------------------------------------------------------------------
+; Vectors
+
+IRQVec          := $0314
+BRKVec          := $0316
+NMIVec          := $0318
+
+; ---------------------------------------------------------------------------
+; 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_SPR_BG_PRIO := $D01B
+VIC_SPR_COLL    := $D01E
+VIC_SPR_BG_COLL := $D01F
+
+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_CTRL1       := $D011
+VIC_CTRL2       := $D016
+
+VIC_HLINE       := $D012
+
+VIC_LPEN_X      := $D013
+VIC_LPEN_Y      := $D014
+
+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
+
+
+; ---------------------------------------------------------------------------
+; I/O: FDC
+
+FDC             := $D080
+
+; ---------------------------------------------------------------------------
+; I/O: SID
+
+SID0            := $D400
+SID0_S1Lo       := $D400
+SID0_S1Hi       := $D401
+SID0_PB1Lo      := $D402
+SID0_PB1Hi      := $D403
+SID0_Ctl1       := $D404
+SID0_AD1        := $D405
+SID0_SUR1       := $D406
+
+SID0_S2Lo       := $D407
+SID0_S2Hi       := $D408
+SID0_PB2Lo      := $D409
+SID0_PB2Hi      := $D40A
+SID0_Ctl2       := $D40B
+SID0_AD2        := $D40C
+SID0_SUR2       := $D40D
+
+SID0_S3Lo       := $D40E
+SID0_S3Hi       := $D40F
+SID0_PB3Lo      := $D410
+SID0_PB3Hi      := $D411
+SID0_Ctl3       := $D412
+SID0_AD3        := $D413
+SID0_SUR3       := $D414
+
+SID0_FltLo      := $D415
+SID0_FltHi      := $D416
+SID0_FltCtl     := $D417
+SID0_Amp        := $D418
+SID0_ADConv1    := $D419
+SID0_ADConv2    := $D41A
+SID0_Noise      := $D41B
+SID0_Read3      := $D41C
+
+SID1            := $D420
+SID1_S1Lo       := $D420
+SID1_S1Hi       := $D421
+SID1_PB1Lo      := $D422
+SID1_PB1Hi      := $D423
+SID1_Ctl1       := $D424
+SID1_AD1        := $D425
+SID1_SUR1       := $D426
+
+SID1_S2Lo       := $D427
+SID1_S2Hi       := $D428
+SID1_PB2Lo      := $D429
+SID1_PB2Hi      := $D42A
+SID1_Ctl2       := $D42B
+SID1_AD2        := $D42C
+SID1_SUR2       := $D42D
+
+SID1_S3Lo       := $D42E
+SID1_S3Hi       := $D42F
+SID1_PB3Lo      := $D430
+SID1_PB3Hi      := $D431
+SID1_Ctl3       := $D432
+SID1_AD3        := $D433
+SID1_SUR3       := $D434
+
+SID1_FltLo      := $D435
+SID1_FltHi      := $D436
+SID1_FltCtl     := $D437
+SID1_Amp        := $D438
+SID1_ADConv1    := $D439
+SID1_ADConv2    := $D43A
+SID1_Noise      := $D43B
+SID1_Read3      := $D43C
+
+; ---------------------------------------------------------------------------
+; 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_SDR        := $DD0C
+CIA2_ICR        := $DD0D
+CIA2_CRA        := $DD0E
+CIA2_CRB        := $DD0F
+
+; ---------------------------------------------------------------------------
+; I/O: DMA
+
+DMA             := $D700
+
+
+; ---------------------------------------------------------------------------
+; 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

asminc/cbm_kernal.inc

@@ -63,6 +63,35 @@
   MOUSE_GET                     := $FF6B
 .endif
 
+.if .def(__C65__) || .def (__MEGA65__)
+  ; extended C65 jump table
+  VERSIONQ     := $FF2F
+  RESET_RUN    := $FF32
+  CURSOR       := $FF35
+  SAVEFL       := $FF3B
+  GETIO        := $FF41
+  GETLFS       := $FF44
+  KEYLOCKS     := $FF47
+  ADDKEY       := $FF4A
+  SPIN_SPOUT   := $FF4D
+  CLSALL       := $FF50
+  C64MODE      := $FF53
+  MonitorCall  := $FF56
+  BOOT_SYS     := $FF59
+  PHOENIX      := $FF5C
+  LKUPLA       := $FF5F
+  LKUPSA       := $FF62
+  SWAPPER      := $FF65
+  PFKEY        := $FF68
+  SETBNK       := $FF6B
+  JSRFAR       := $FF6E
+  JMPFAR       := $FF71
+  LDA_FAR      := $FF74
+  STA_FAR      := $FF77
+  CMP_FAR      := $FF7A
+  PRIMM        := $FF7D
+.endif
+
 .if .def(__C128__)
   ; C128 extended jump table
   C64MODE      := $FF4D
@@ -83,7 +112,7 @@
   PRIMM        := $FF7D
 .endif
 
-.if .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__)
+.if .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__) || .def(__C65__) || .def (__MEGA65__)
   CINT         := $FF81
   IOINIT       := $FF84
   RAMTAS       := $FF87
@@ -96,7 +125,7 @@
   CINT         := $FF7E
 .endif
 
-.if .def(__VIC20__) || .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__)
+.if .def(__VIC20__) || .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__) || .def(__C65__) || .def (__MEGA65__)
   RESTOR       := $FF8A
   VECTOR       := $FF8D
 .elseif .def(__CBM510__) || .def(__CBM610__)
@@ -112,6 +141,17 @@
   MEMBOT       := $FF9C
   SCNKEY       := $FF9F
   SETTMO       := $FFA2
+.elseif .def(__C65__) || .def (__MEGA65__)
+  SETMSG       := $FF90
+  SECOND       := $FF93
+  TKSA         := $FF96
+  MEMTOP       := $FF99
+  MEMBOT       := $FF9C
+  SCNKEY       := $FF9F
+  MONEXIT      := $FFA2
+.endif
+
+.if .def(__CBM510__) || .def(__CBM610__) || .def(__VIC20__) || .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__) || .def(__C65__) || .def(__MEGA65__)
   ACPTR        := $FFA5
   CIOUT        := $FFA8
   UNTLK        := $FFAB
@@ -136,7 +176,7 @@ CHRIN          := $FFCF
 BSOUT          := $FFD2
 CHROUT         := $FFD2
 
-.if .def(__CBM510__) || .def(__CBM610__) || .def(__VIC20__) || .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__)
+.if .def(__CBM510__) || .def(__CBM610__) || .def(__VIC20__) || .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__) || .def(__C65__) || .def(__MEGA65__)
   LOAD         := $FFD5
   SAVE         := $FFD8
   SETTIM       := $FFDB
@@ -147,9 +187,14 @@ CHROUT         := $FFD2
 STOP           := $FFE1
 GETIN          := $FFE4
 CLALL          := $FFE7
-UDTIM          := $FFEA
 
-.if .def(__CBM510__) || .def(__CBM610__) || .def(__VIC20__) || .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__)
+.if .def(__C65__) || .def(__MEGA65__)
+ScanStopKey    := $FFEA
+.else
+UDTIM          := $FFEA
+.endif
+
+.if .def(__CBM510__) || .def(__CBM610__) || .def(__VIC20__) || .def(__C64__) || .def(__C128__) || .def(__C16__) || .def(__CX16__) || .def(__C65__) || .def(__MEGA65__)
   SCREEN       := $FFED
   PLOT         := $FFF0
   IOBASE       := $FFF3
@@ -189,4 +234,6 @@ UDTIM          := $FFEA
 .elseif .def(__C16__)
   CLRSCR       := $D88B
   KBDREAD      := $D8C1
+.elseif .def(__C65__) ||  .def(__MEGA65__)
+;  CLRSCR       := $E0EC ; ???
 .endif

asminc/cpu.mac

@@ -1,12 +1,15 @@
-; CPU bitmask constants
+; CPU bitmask constants (make sure this matches src/common/cpu.h)
+
 CPU_ISET_NONE      = $0001
 CPU_ISET_6502      = $0002
 CPU_ISET_6502X     = $0004
 CPU_ISET_6502DTV   = $0008
+
 CPU_ISET_65SC02    = $0010
 CPU_ISET_65C02     = $0020
 CPU_ISET_65816     = $0040
 CPU_ISET_SWEET16   = $0080
+
 CPU_ISET_HUC6280   = $0100
 CPU_ISET_M740      = $0200
 CPU_ISET_4510      = $0400
@@ -21,9 +24,11 @@ CPU_65SC02         = CPU_ISET_6502|CPU_ISET_65SC02
 CPU_65C02          = CPU_ISET_6502|CPU_ISET_65SC02|CPU_ISET_65C02
 CPU_65816          = CPU_ISET_6502|CPU_ISET_65SC02|CPU_ISET_65816
 CPU_SWEET16        = CPU_ISET_SWEET16
+; FIXME: CPU_ISET_65SC02 does not apply to the following, because the zp-indirect
+; addressing was replaced with zp-indirect,z-indexed in 652SCE02
 ; NOTE: HUC6280 removes "wai" ($cb) and "stp" ($db) from the 65C02 instruction set
-CPU_HUC6280        = CPU_ISET_6502|CPU_ISET_65SC02|CPU_ISET_65C02|CPU_ISET_HUC6280
+CPU_HUC6280        = CPU_ISET_6502|CPU_ISET_65C02|CPU_ISET_HUC6280
-; NOTE: 45100 replaces "wai" ($cb) and "stp" ($db) of the 65C02 instruction set
+; NOTE: 4510 replaces "wai" ($cb) and "stp" ($db) of the 65C02 instruction set
-CPU_4510           = CPU_ISET_6502|CPU_ISET_65SC02|CPU_ISET_65C02|CPU_ISET_4510
+CPU_4510           = CPU_ISET_6502|CPU_ISET_65C02|CPU_ISET_4510
-CPU_45GS02         = CPU_ISET_6502|CPU_ISET_65SC02|CPU_ISET_65C02|CPU_ISET_4510|CPU_ISET_45GS02
+CPU_45GS02         = CPU_ISET_6502|CPU_ISET_65C02|CPU_ISET_4510|CPU_ISET_45GS02
 CPU_M740           = CPU_ISET_6502|CPU_ISET_M740

asminc/mega65.inc

@@ -0,0 +1,235 @@
+
+; ---------------------------------------------------------------------------
+; Zero page, Commodore stuff
+
+TXTPTR          := $3C          ; Pointer into BASIC source code
+STATUS          := $90          ; Kernal I/O completion status
+FNAM_LEN        := $B7          ; Length of filename
+SECADR          := $B9          ; Secondary address
+DEVNUM          := $BA          ; Device number
+FNAM            := $BB          ; Address of filename
+FNAM_BANK       := $BE          ; Bank for filename
+KEY_COUNT       := $D0          ; Number of keys in input buffer
+FKEY_COUNT      := $D1          ; Characters for function key
+MODE            := $D7          ; 40-/80-column mode (bit 7: 80 columns)
+GRAPHM          := $D8          ; Graphics mode flags (bits 5-7)
+CHARDIS         := $D9          ; Bit 2 shadow for location $01
+CURS_X          := $EC          ; Cursor column
+CURS_Y          := $EB          ; Cursor row
+SCREEN_PTR      := $E0          ; Pointer to current char in text screen
+CRAM_PTR        := $E2          ; Pointer to current char in color RAM
+CHARCOLOR       := $F1
+RVS             := $F3          ; Reverse output flag
+SCROLL          := $F8          ; Disable scrolling flag
+
+BASIC_BUF       := $0200        ; Location of command-line
+BASIC_BUF_LEN   = 161           ; Maximum length of command-line
+
+FKEY_LEN        := $1000        ; Function key lengths
+FKEY_TEXT       := $100A        ; Function key texts
+
+PALFLAG         := $1103        ; $FF=PAL, $00=NTSC
+INIT_STATUS     := $1104        ; Flags: Reset/Restore initiation status
+TIME            := $110C        ; 60HZ clock
+
+KBDREPEAT       := $111a
+KBDREPEATRATE   := $111b
+KBDREPEATDELAY  := $111c
+
+; ---------------------------------------------------------------------------
+; Vectors
+
+IRQVec          := $0314
+BRKVec          := $0316
+NMIVec          := $0318
+
+; ---------------------------------------------------------------------------
+; 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_SPR_BG_PRIO := $D01B
+VIC_SPR_COLL    := $D01E
+VIC_SPR_BG_COLL := $D01F
+
+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_CTRL1       := $D011
+VIC_CTRL2       := $D016
+
+VIC_HLINE       := $D012
+
+VIC_LPEN_X      := $D013
+VIC_LPEN_Y      := $D014
+
+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
+
+
+; ---------------------------------------------------------------------------
+; I/O: FDC
+
+FDC             := $D080
+
+; ---------------------------------------------------------------------------
+; I/O: SID
+
+SID0            := $D400
+SID0_S1Lo       := $D400
+SID0_S1Hi       := $D401
+SID0_PB1Lo      := $D402
+SID0_PB1Hi      := $D403
+SID0_Ctl1       := $D404
+SID0_AD1        := $D405
+SID0_SUR1       := $D406
+
+SID0_S2Lo       := $D407
+SID0_S2Hi       := $D408
+SID0_PB2Lo      := $D409
+SID0_PB2Hi      := $D40A
+SID0_Ctl2       := $D40B
+SID0_AD2        := $D40C
+SID0_SUR2       := $D40D
+
+SID0_S3Lo       := $D40E
+SID0_S3Hi       := $D40F
+SID0_PB3Lo      := $D410
+SID0_PB3Hi      := $D411
+SID0_Ctl3       := $D412
+SID0_AD3        := $D413
+SID0_SUR3       := $D414
+
+SID0_FltLo      := $D415
+SID0_FltHi      := $D416
+SID0_FltCtl     := $D417
+SID0_Amp        := $D418
+SID0_ADConv1    := $D419
+SID0_ADConv2    := $D41A
+SID0_Noise      := $D41B
+SID0_Read3      := $D41C
+
+SID1            := $D420
+SID1_S1Lo       := $D420
+SID1_S1Hi       := $D421
+SID1_PB1Lo      := $D422
+SID1_PB1Hi      := $D423
+SID1_Ctl1       := $D424
+SID1_AD1        := $D425
+SID1_SUR1       := $D426
+
+SID1_S2Lo       := $D427
+SID1_S2Hi       := $D428
+SID1_PB2Lo      := $D429
+SID1_PB2Hi      := $D42A
+SID1_Ctl2       := $D42B
+SID1_AD2        := $D42C
+SID1_SUR2       := $D42D
+
+SID1_S3Lo       := $D42E
+SID1_S3Hi       := $D42F
+SID1_PB3Lo      := $D430
+SID1_PB3Hi      := $D431
+SID1_Ctl3       := $D432
+SID1_AD3        := $D433
+SID1_SUR3       := $D434
+
+SID1_FltLo      := $D435
+SID1_FltHi      := $D436
+SID1_FltCtl     := $D437
+SID1_Amp        := $D438
+SID1_ADConv1    := $D439
+SID1_ADConv2    := $D43A
+SID1_Noise      := $D43B
+SID1_Read3      := $D43C
+
+; ---------------------------------------------------------------------------
+; 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_SDR        := $DD0C
+CIA2_ICR        := $DD0D
+CIA2_CRA        := $DD0E
+CIA2_CRB        := $DD0F
+
+; ---------------------------------------------------------------------------
+; I/O: DMA
+
+DMA             := $D700
+
+
+; ---------------------------------------------------------------------------
+; 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