projects / z180-stamp.git / blame
| Commit | Line | Data |
|---|---|---|
| bad2d92d L |
1 | page 255\r |
| 2 | .z80\r | |
| e4c4b148 | 3 | \r |
| bad2d92d L |
4 | global msg_rx_fifo,msg_tx_fifo\r |
| 5 | \r | |
| 6 | global msginit,msgi.st,msg.in,msgo.st,msg.out\r | |
| 7 | global msg.sout,msg.co\r | |
| e4c4b148 | 8 | \r |
| bad2d92d L |
9 | extrn buf.init\r |
| 10 | \r | |
| 11 | include config.inc\r | |
| 12 | include z180reg.inc\r | |
| 13 | \r | |
| 14 | ;--------------------------------------------------------------\r | |
| 15 | \r | |
| 16 | dseg\r | |
| 17 | \r | |
| e4c4b148 L |
18 | mkbuf mtx.fifo_id, msg_tx_fifo, msg_tx_fifo_len\r |
| 19 | mkbuf mrx.fifo_id, msg_rx_fifo, msg_rx_fifo_len\r | |
| bad2d92d L |
20 | \r |
| 21 | \r | |
| 22 | \r | |
| 23 | ;--------------------------------------------------------------\r | |
| 24 | \r | |
| 25 | cseg\r | |
| 26 | \r | |
| 27 | ;\r | |
| 28 | ; Init buffer\r | |
| 29 | ;\r | |
| e4c4b148 | 30 | \r |
| bad2d92d L |
31 | msginit:\r |
| 32 | ld ix,msg_rx_fifo\r | |
| 33 | ld a,msg_rx_fifo.mask\r | |
| 34 | call buf.init\r | |
| 35 | ld ix,msg_tx_fifo\r | |
| 36 | ld a,msg_tx_fifo.mask\r | |
| 37 | jp buf.init\r | |
| 38 | \r | |
| 39 | ;--------------------------------------------------------------\r | |
| 40 | \r | |
| 41 | msgi.st:\r | |
| 42 | push ix\r | |
| 43 | ld ix,msg_rx_fifo ;\r | |
| 44 | \r | |
| 45 | buf.empty:\r | |
| 46 | ld a,(ix+o.in_idx) ;\r | |
| 47 | sub (ix+o.out_idx) ;\r | |
| 48 | pop ix\r | |
| 49 | ret z\r | |
| 50 | or 0ffh\r | |
| 51 | ret\r | |
| e4c4b148 | 52 | \r |
| bad2d92d L |
53 | ;--------------------------------------------------------------\r |
| 54 | \r | |
| 55 | msg.in:\r | |
| 56 | push ix\r | |
| 57 | ld ix,msg_rx_fifo ;\r | |
| 58 | \r | |
| 59 | buf.get:\r | |
| 60 | ld a,(ix+o.out_idx) ;\r | |
| 61 | bg.wait:\r | |
| 62 | cp (ix+o.in_idx) ;\r | |
| 63 | jr z,bg.wait\r | |
| 64 | \r | |
| 65 | push hl ;\r | |
| 66 | push ix\r | |
| 67 | pop hl\r | |
| 68 | add a,l\r | |
| 69 | ld l,a\r | |
| 70 | jr nc,bg.nc\r | |
| 71 | inc h\r | |
| 72 | bg.nc:\r | |
| 73 | ld l,(hl)\r | |
| e4c4b148 | 74 | \r |
| bad2d92d L |
75 | ld a,(ix+o.out_idx) ;\r |
| 76 | inc a\r | |
| 77 | and (ix+o.mask)\r | |
| 78 | ld (ix+o.out_idx),a\r | |
| e4c4b148 | 79 | \r |
| bad2d92d L |
80 | ld a,l\r |
| 81 | pop hl\r | |
| 82 | pop ix\r | |
| 83 | ret\r | |
| 84 | \r | |
| 85 | ;--------------------------------------------------------------\r | |
| 86 | \r | |
| 87 | msgo.st:\r | |
| 88 | push ix\r | |
| 89 | ld ix,msg_tx_fifo ;\r | |
| 90 | \r | |
| 91 | buf.full:\r | |
| 92 | ld a,(ix+o.in_idx) ;\r | |
| 93 | inc a\r | |
| 94 | and (ix+o.mask)\r | |
| 95 | sub (ix+o.out_idx) ;\r | |
| 96 | pop ix\r | |
| 97 | ret z\r | |
| 98 | or 0ffh\r | |
| 99 | ret\r | |
| 100 | \r | |
| 101 | ;--------------------------------------------------------------\r | |
| 102 | \r | |
| 103 | msg.out:\r | |
| 104 | push ix\r | |
| 105 | ld ix,msg_tx_fifo ;\r | |
| 106 | \r | |
| 107 | buf.put:\r | |
| 108 | push hl ;\r | |
| 109 | push bc\r | |
| 110 | push ix\r | |
| 111 | pop hl\r | |
| 112 | ld c,(ix+o.in_idx) ;\r | |
| 113 | ld b,0\r | |
| 114 | add hl,bc\r | |
| 115 | ld b,a\r | |
| 116 | \r | |
| 117 | ld a,c ;\r | |
| 118 | inc a\r | |
| 119 | and (ix+o.mask)\r | |
| 120 | bp.wait:\r | |
| 121 | cp (ix+o.out_idx) ;\r | |
| 122 | jr z,bp.wait\r | |
| 123 | ld (hl),b\r | |
| 124 | ld (ix+o.in_idx),a\r | |
| e4c4b148 | 125 | \r |
| bad2d92d L |
126 | ld a,b\r |
| 127 | out0 (AVRINT5),a\r | |
| 128 | pop bc\r | |
| 129 | pop hl\r | |
| 130 | pop ix\r | |
| 131 | ret\r | |
| 132 | \r | |
| 133 | \r | |
| 134 | ;--------------------------------------------------------------\r | |
| 135 | ;--------------------------------------------------------------\r | |
| 136 | ;--------------------------------------------------------------\r | |
| 137 | \r | |
| 138 | if 0\r | |
| 139 | msg.out:\r | |
| 140 | push ix\r | |
| 141 | ld ix,msg_fifo ;\r | |
| 142 | \r | |
| 143 | push bc\r | |
| 144 | ld b,a ;save char\r | |
| 145 | ld a,(ix+o.in_idx) ;\r | |
| 146 | inc a\r | |
| 147 | and (ix+o.mask)\r | |
| 148 | bp.wait:\r | |
| 149 | cp (ix+o.out_idx) ;\r | |
| 150 | jr z,bp.wait\r | |
| 151 | ld c,a\r | |
| 152 | ld a,b\r | |
| 153 | out (PMSG),a\r | |
| 154 | ld (ix+o.in_idx),c\r | |
| e4c4b148 | 155 | \r |
| bad2d92d L |
156 | pop bc\r |
| 157 | pop ix\r | |
| 158 | ret\r | |
| 159 | endif\r | |
| 160 | \r | |
| 161 | ;--------------------------------------------------------------\r | |
| 162 | ;\r | |
| 163 | ; (hl): data\r | |
| 164 | \r | |
| 165 | msg.sout:\r | |
| 166 | push ix\r | |
| 167 | ld ix,msg_tx_fifo ;\r | |
| 168 | \r | |
| 169 | push bc\r | |
| 170 | push de\r | |
| 171 | ld b,(hl) ;\r | |
| 172 | inc hl\r | |
| 173 | ex de,hl\r | |
| e4c4b148 | 174 | \r |
| bad2d92d L |
175 | ms.ol:\r |
| 176 | push ix\r | |
| 177 | pop hl\r | |
| 178 | ld c,(ix+o.in_idx) ;\r | |
| 179 | ld a,c\r | |
| 180 | add l\r | |
| 181 | ld l,a\r | |
| 182 | jr nc,ms.on\r | |
| 183 | inc h\r | |
| 184 | ms.on:\r | |
| 185 | ld a,c ;\r | |
| 186 | inc a\r | |
| 187 | and (ix+o.mask)\r | |
| 188 | ms.wait:\r | |
| 189 | cp (ix+o.out_idx) ;\r | |
| 190 | jr z,ms.wait\r | |
| 191 | ld c,a\r | |
| 192 | ld a,(de)\r | |
| 193 | inc de\r | |
| 194 | ld (hl),a\r | |
| 195 | ld (ix+o.in_idx),c\r | |
| 196 | djnz ms.ol\r | |
| 197 | out0 (AVRINT5),a\r | |
| 198 | ex de,hl\r | |
| 199 | pop de\r | |
| 200 | pop bc\r | |
| 201 | pop ix\r | |
| 202 | ret\r | |
| 203 | \r | |
| 204 | ;--------------------------------------------------------------\r | |
| 205 | \r | |
| 206 | if 0\r | |
| 207 | msg.sout:\r | |
| 208 | push ix\r | |
| 209 | ld ix,msg_fifo ;\r | |
| 210 | push bc\r | |
| 211 | \r | |
| 212 | ld b,(hl) ;count\r | |
| 213 | inc hl\r | |
| 214 | obs_1:\r | |
| 215 | ld a,(ix+o.out_idx) ;\r | |
| 216 | sub (ix+o.in_idx) ;\r | |
| 217 | dec a\r | |
| 218 | and (ix+o.mask)\r | |
| 219 | cp b\r | |
| 220 | jr c,obs_1\r | |
| 221 | \r | |
| 222 | ld c,(hl) ;port address\r | |
| 223 | inc hl\r | |
| 224 | ld a,b\r | |
| 225 | otir\r | |
| 226 | add (ix+o.in_idx)\r | |
| 227 | and (ix+o.mask)\r | |
| 228 | ld (ix+o.in_idx),a\r | |
| 229 | pop bc\r | |
| 230 | pop ix\r | |
| 231 | ret\r | |
| 232 | \r | |
| 233 | ;----------------------------------------------------------------------\r | |
| 234 | endif\r | |
| 235 | \r | |
| 236 | msg.co:\r | |
| 237 | push af\r | |
| 238 | push hl\r | |
| 239 | ld (buf_char),a\r | |
| 240 | ld hl,buf\r | |
| 241 | call msg.sout\r | |
| 242 | pop hl\r | |
| 243 | pop af\r | |
| 244 | ret\r | |
| e4c4b148 L |
245 | \r |
| 246 | \r | |
| bad2d92d L |
247 | buf:\r |
| 248 | db buf_end - $ - 1 ;output string length\r | |
| 249 | db 081h ; message start token\r | |
| 250 | db buf_end - $ - 1 ; message length\r | |
| 251 | db 1 ; command\r | |
| 252 | db 1 ; subcommand\r | |
| 253 | buf_char:\r | |
| 254 | db 0 ; pay load\r | |
| 255 | buf_end:\r | |
| 256 | \r | |
| 257 | ;----------------------------------------------------------------------\r | |
| 258 | \r | |
| 259 | end\r |