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1 IFNE CCIODEFS-1
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2
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3 CCIODEFS set 1
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4
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5 ********************************************************************
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6 * CCIODefs - CoCo 1/2 I/O Definitions
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7 *
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8 * $Id$
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9 *
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10 * Edt/Rev YYYY/MM/DD Modified by
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11 * Comment
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12 * ------------------------------------------------------------------
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13 *
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14 * 2004/11/29, P.Harvey-Smith.
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15 * Added symbolic defines for bits in V.CoLoad.
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16 *
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17 * 2004/12/02, P.Harvey-Smith.
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18 * moved over all variables from co51.asm
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19 *
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20 nam CCIODefs
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21 ttl CoCo 1/2 I/O Definitions
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22
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23 ********************
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24 * CCIO Static Memory
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25 *
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26 org V.SCF
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27 V.ScrnA rmb 2 (2) screen start address in system memory
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28 V.ScrnE rmb 2 (2) address of end of screen
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29 V.CrsrA rmb 1 (2) cursor address
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30 V.CrsAL rmb 1 cursor address low
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31 V.CChar rmb 1 value of character under cursor
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32 V.Mode rmb 1 mode: 0=256x192 x2, 1=128x192 x4
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33 V.NGChr rmb 1 number of additional characters to get
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34 V.RTAdd rmb 2 (2) return address after getting characters
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35 V.NChar rmb 1 character to process
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36 V.NChr2 rmb 1 and the next one
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37 rmb 1
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38 V.Chr1 rmb 1 same as under cursor character
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39 V.CColr rmb 1 cursor color
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40 V.Col rmb 1 number of columns for this screen
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41 V.Row rmb 1 number of rows
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42 V.Alpha rmb 1 0 when in alpha mode
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43 V.PIA1 rmb 1 PIA1Base value
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44 V.Rdy rmb 1 device ready (see SS.DStat 0=not ready)
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45 V.CFlg1 rmb 1 VDG display code values
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46 V.SBAdd rmb 2 (2) address of block screen is in
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47 V.GBuff rmb 2 allocation for graphics buffers (block#)
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48 V.AGBuf rmb 4 (2) additional graphics buffer
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49 V.FFMem rmb 2 Flood fill alloc'ed mem
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50 V.FFSPt rmb 2 Flood fill current stack pointer
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51 V.FFSTp rmb 1 Flood fill stack top
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52 V.FF6 rmb 1 flood fill flag
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53 V.FFFlag rmb 1 ??
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54 V.MTabl rmb 2 (2) address of mask table for pixels in byte
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55 V.PixBt rmb 1 bit mask for modes (0=$07, 1=$03 )#pixels/byte
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56 V.GCrsX rmb 1 graphics cursor X value
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57 V.GCrsY rmb 1 graphics cursor Y
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58 V.Msk1 rmb 1 mask byte 1
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59 V.Msk2 rmb 1 mask byte 2 (00,55,AA,FF)
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60 V.MCol rmb 1 color? (C003,8001)
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61 V.4A rmb 1
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62 V.PMask rmb 1 pixel mask for colors (i.e. $55, $CC etc)
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63 V.4C rmb 1
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64 V.4D rmb 1
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65 V.4E rmb 1
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66 V.4F rmb 1
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67 V.Caps rmb 1 caps lock info: $00=lower $FF=upper
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68 V.ClkCnt rmb 1 clock count ??
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69 V.WrChr rmb 1 character to write
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70 V.CurCo rmb 1 current CO-module in use
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71 * start of CO80-specific static memory
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72 V.54 rmb 1
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73 V.55 rmb 1
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74 V.56 rmb 1
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75 V.57 rmb 1
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76 V.C80X rmb 1 CO80 X position
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77 V.C80Y rmb 1 CO80 Y position
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78 V.5A rmb 1
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79 * end of CO80-specific static memory
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80 V.DspVct rmb 2 vector to display screen
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81 V.CnvVct rmb 2 vector to X/Y to address conversion
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82 V.LKeyCd rmb 1 last key code
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83 V.2Key1 rmb 1 2nd Key 1
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84 V.2Key2 rmb 1 2nd Key 2
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85 V.2Key3 rmb 1 2nd Key 3
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86 V.Key1 rmb 1 Key 1
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87 V.Key2 rmb 1 Key 2
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88 V.Key3 rmb 1 Key 3
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89 V.ShftDn rmb 1 SHIFT/CTRL state
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90 V.CtrlDn rmb 1 CTRL key down
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91 V.KeyFlg rmb 1 key flag
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92 V.AltDwn rmb 1 ALT key down
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93 V.KySns rmb 1 key sense flags
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94 V.KySame rmb 1 key same as last flag
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95 V.KySnsF rmb 1 key sense flag
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96 V.Spcl rmb 1
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97 V.KTblLC rmb 1 key table entry #
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98 V.6F rmb 1 ???
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99 V.COLoad rmb 1 CO-module loaded flags
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100 V.CFlag rmb 1 true lowercase flag $10=true, $00=false
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101 V.GRFOE rmb 2 GRFO entry point
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102 V.CO32E rmb 2 CO32 entry point
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103 V.CO80E rmb 2 CO80 entry point
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104 V.CO51E rmb 2 CO51 entry point
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105 ;Co51 vars
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106 V.51ScrnA rmb 2 ; Screen address.
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107 V.51XPos rmb 1 ; X co-ordinate
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108 V.51YPos rmb 1 ; Y co-ordinate
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109 V.51EscSeq rmb 1 ; In escape sequence
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110 V.51ReverseFlag rmb 1 ; Reverse video flag
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111 V.51UnderlineFlag rmb 1 ; Underline flag
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112 V.51CtrlDispatch rmb 2 ; Ctrl char dispatch address, currently processing
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113
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114 ; I'm not sure what these do (yet).
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115
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116 V.5126 rmb 1
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117 V.5130 rmb 1
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118 V.5131 rmb 1
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119 V.5132 rmb 1
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120 V.5133 rmb 1
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121 V.5134 rmb 1
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122 V.5135 rmb 1
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123 V.5136 rmb 1
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124 ; End of c051 vars
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125 ; **** Note these have to come at the end of the defs, or the keyboard ****
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126 ; **** code can clobber variables defined after these ! ****
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127 V.IBufH rmb 1 input buffer head
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128 V.IBufT rmb 1 input buffer tail
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129 V.InBuf rmb 1 input buffer tail
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130 V.51End rmb 1
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131 rmb 250-.
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132 V.Last equ .
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133
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134
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135 * Unknown for now
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136 *VD.FFMem rmb 2 (2) bottom of stack for flood fill
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137 *VD.FFSPt rmb 2 (2) flood fill stack pointer
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138 *VD.FFSTp rmb 2 (2) flood fill stack top pointer
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139 *VD.FF6 rmb 1 flood fill flag
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140 *VD.MCol2 rmb 1 color
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141 *VD.FF1 rmb 1 data for flood fill
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142 *VD.FF2 rmb 1 data for flood fill
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143 *VD.FFMsk rmb 1 flood fill mask
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144 *VD.FFFlg rmb 1 flood fill flag
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145 *VD.Palet rmb 16 (16) current palette values
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146 *VD.PlFlg rmb 1 initialized to $08 by L00DB, and then unused!
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147
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148 ;
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149 ; Defs for V.COLoad flags.
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150 ;
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151
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152 ModCo32 equ %00000010 ; Co32, normal VDG 32x16.
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153 ModCo80 equ %00000100 ; Co80, wordpak rs, 80x25
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154 ModCo51 equ %00001000 ; Co51, pmode 4 51x25 text
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155
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156 ENDC
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157
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