git.sur5r.net Git - cc65/blob - asminc/cbm510.inc

   1 ;
   2 ; Zero page variables and I/O definitions for the CBM 510
   3 ;
   4 ; Taken from a kernal disassembly done by myself in 2000/2001.
   5 ;
   6 ; 2001-09-13, Ullrich von Bassewitz
   7 ; 2013-08-26, Greg King
   8
   9
  10 ;-----------------------------------------------------------------------------
  11 ; Zeropage stuff
  12
  13 ExecReg         := $00          ; Controls execution memory bank
  14 IndReg          := $01          ; Controls indirect indexed load-store bank
  15
  16 TXTPTR          := $85          ; Far pointer into BASIC source code
  17
  18 ; ---------------------------------------------------------------------------
  19 ; Screen size
  20
  21 XSIZE           = 40
  22 YSIZE           = 25
  23
  24 ;-----------------------------------------------------------------------------
  25 ; I/O Definitions
  26
  27 ; I/O  $d800: VIC-II
  28
  29 VIC_SPR0_X      = $00
  30 VIC_SPR0_Y      = $01
  31 VIC_SPR1_X      = $02
  32 VIC_SPR1_Y      = $03
  33 VIC_SPR2_X      = $04
  34 VIC_SPR2_Y      = $05
  35 VIC_SPR3_X      = $06
  36 VIC_SPR3_Y      = $07
  37 VIC_SPR4_X      = $08
  38 VIC_SPR4_Y      = $09
  39 VIC_SPR5_X      = $0A
  40 VIC_SPR5_Y      = $0B
  41 VIC_SPR6_X      = $0C
  42 VIC_SPR6_Y      = $0D
  43 VIC_SPR7_X      = $0E
  44 VIC_SPR7_Y      = $0F
  45 VIC_SPR_HI_X    = $10
  46 VIC_SPR_ENA     = $15
  47 VIC_SPR_EXP_Y   = $17
  48 VIC_SPR_EXP_X   = $1D
  49 VIC_SPR_MCOLOR  = $1C
  50 VIC_SPR_BG_PRIO = $1B
  51
  52 VIC_SPR_MCOLOR0 = $25
  53 VIC_SPR_MCOLOR1 = $26
  54
  55 VIC_SPR0_COLOR  = $27
  56 VIC_SPR1_COLOR  = $28
  57 VIC_SPR2_COLOR  = $29
  58 VIC_SPR3_COLOR  = $2A
  59 VIC_SPR4_COLOR  = $2B
  60 VIC_SPR5_COLOR  = $2C
  61 VIC_SPR6_COLOR  = $2D
  62 VIC_SPR7_COLOR  = $2E
  63
  64 VIC_CTRL1       = $11
  65 VIC_CTRL2       = $16
  66
  67 VIC_HLINE       = $12
  68
  69 VIC_VIDEO_ADR   = $18
  70
  71 VIC_IRR         = $19           ; Interrupt request register
  72 VIC_IMR         = $1A           ; Interrupt mask register
  73
  74 VIC_BORDERCOLOR = $20
  75 VIC_BG_COLOR0   = $21
  76 VIC_BG_COLOR1   = $22
  77 VIC_BG_COLOR2   = $23
  78 VIC_BG_COLOR3   = $24
  79
  80
  81 ; I/O  $da00: SID 6581
  82
  83 SID_S1Lo        = $00
  84 SID_S1Hi        = $01
  85 SID_PB1Lo       = $02
  86 SID_PB1Hi       = $03
  87 SID_Ctl1        = $04
  88 SID_AD1         = $05
  89 SID_SUR1        = $06
  90
  91 SID_S2Lo        = $07
  92 SID_S2Hi        = $08
  93 SID_PB2Lo       = $09
  94 SID_PB2Hi       = $0A
  95 SID_Ctl2        = $0B
  96 SID_AD2         = $0C
  97 SID_SUR2        = $0D
  98
  99 SID_S3Lo        = $0E
 100 SID_S3Hi        = $0F
 101 SID_PB3Lo       = $10
 102 SID_PB3Hi       = $11
 103 SID_Ctl3        = $12
 104 SID_AD3         = $13
 105 SID_SUR3        = $14
 106
 107 SID_FltLo       = $15
 108 SID_FltHi       = $16
 109 SID_FltCtl      = $17
 110 SID_Amp         = $18
 111 SID_ADConv1     = $19
 112 SID_ADConv2     = $1A
 113 SID_Noise       = $1B
 114 SID_Read3       = $1C
 115
 116
 117 ; I/O  $db00: CIA 6526, Inter Process Communication
 118 ; I/O  $dc00: CIA 6526
 119
 120 .struct CIA
 121         PRA     .byte
 122         PRB     .byte
 123         DDRA    .byte
 124         DDRB    .byte
 125         .union
 126             .struct
 127                 TALO    .byte
 128                 TAHI    .byte
 129             .endstruct
 130             TA          .word
 131         .endunion
 132         .union
 133             .struct
 134                 TBLO    .byte
 135                 TBHI    .byte
 136             .endstruct
 137             TB          .word
 138         .endunion
 139         TOD10   .byte
 140         TODSEC  .byte
 141         TODMIN  .byte
 142         TODHR   .byte
 143         SDR     .byte
 144         ICR     .byte
 145         CRA     .byte
 146         CRB     .byte
 147 .endstruct
 148
 149
 150 ; I/O  $dd00: ACIA 6551
 151
 152 .struct ACIA
 153         DATA    .byte
 154         STATUS  .byte
 155         CMD     .byte
 156         CTRL    .BYTE
 157 .endstruct
 158
 159
 160 ; I/O  $de00: Triport #1 6525
 161 ; I/O  $df00: Triport #2 6525
 162
 163 .struct TPI
 164         PRA     .byte
 165         PRB     .byte
 166         .union
 167                 PRC     .byte
 168                 INT     .byte
 169         .endunion
 170         DDRA    .byte
 171         DDRB    .byte
 172         .union
 173                 DDRC    .byte
 174                 IMR     .byte
 175         .endunion
 176         CR      .byte
 177         AIR     .byte
 178 .endstruct
 179
 180
 181 ;-----------------------------------------------------------------------------
 182 ; Our video memory address
 183
 184 COLOR_RAM       := $D400        ; System bank
 185
 186
 187 ;-----------------------------------------------------------------------------
 188
 189 BASIC_BUF       := $FB5E        ; Bank 0 location of command-line
 190 BASIC_BUF_LEN   = 162           ; Maximum length of command-line