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Download RX02 Floppy Disk System User's Guide
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228 229 2311 231 232 233 234 235 236 237 238 239 2411 241 242 243 244 245 246 247 248 249 2511 251 252 253 254 255 256 257 258 259 2611 261 262 263 264 265 266 267 268 269 2711 271 272 ITHE rO~~OWING I IEMPTY IS A PROGRAMMING I 8H2 12'4 32" IlJl4 831' 8316 111317 03211 1377 31118 1268 1261 [ENTRY, TAO DCA ESETUP, TAD DCA TAD TAD ~CO 67e1 I ro~ IWAIT 128 a-BIT BYTES (8 BIT MODE) 8 TRYS TO [MPTy THE lECTOR 8urrER IPARITY ERRO. RETRy COUNTER IPROGRAMS DATA BurrER IAUTO INDEX REGISTER 11 I I I' 12-BIT, 11111 Ir • alT I 2 MEANI EH'TY Bu,rER IIOT TO ISSUE THE COMMAND I r~AG BErORE TRANsrERRING DATA TO THE ~ROGRAHS 10ATA BurrER rROM THE Rxal SECTOR BUrrEp. I IWAIT rOR A DONE TO INDICATE THE r~AG COHP~ETION or THE EMPTY BurrER COMMANO P~IOR I ITESTING THE ERROR 'LAG I 8321 6703 11322 7410 111323 '333 11324 6795 1132' 5274 ITEST ro_ TR r~AG ITA NOT lET, TEST 'OR DONE ITA rL.AG SET ITE5T rD~ DONE r~AO INOT T~, OR OONE YET [LOOP, r~AG I ITHE OONE 'LAG IS SET I ITEST rOR ANY [RRORS (ON~Y ERROR POSSIBLE IS A ~ARITY ERROR) I 11326 11327 ITE&T 'OA THE ERROR INO [RROIIS • OK 67114 7402 I IINCREMENT AND TEST THE PARITY ERROR MfTRY PROGRA~ r~AG LOCATIoN· PTRY • I 14NO RETRY THE COMMAND UNTI~ THE ERROM RECOVERS I lOR UNTI~ I 113311 111331 11332 THE PTRY COUNTER OVERfLOWS TO 9 I $I PTRY JHP ESETuP 2255 '314 IRE TRY TO EM.TY THE SECTOR Bur'ER IHARC PAftlTY ERROR H~T 74~2 I ITHE TRANS'ER REQUEST 281 282 or A TRANsrER REQUEST I 2811 REQUIRED TO I 273 278 279 PROTOCO~ KM11! PTRy (BUrrER-l) Ale MoDE COMMAND 274 275 276 277 or SECTOR BurrER or 64 12-SIT WOROS (12 BIT HODEl, OR T~E I IEMPTY THE SECTOR BurrER nn £XAHP~[ r~AG IS SET ITRANsrER OATA TO THE PROGRAMS DATA BurrER rROM THE Rxel SECTOR Bu,rER I 111333 11334 1l33' eJ77 67112 34U EMPTY, XDR DCA I AU '321 JM~ £~OOP a4U PAGE 0377 ITHE rO~~OWING PROGRAM THC RXgl SECTOR BurFER ITO THE 'ROG.AHS DATA IUFrER ILOOP UNTIL THE DONE rLAG SETS IrRO~ ~OCAT!ONS ARE RESERVED roq THE I 283 BUrrER, 9 284 285 s eBurrER+2111 Figure 4-12 RX8E Empty Buffer Example 4-16 PROGRA~S DATA BurrER TO
