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Download BBC Microcomputer Advanced User Guide
Transcript
files flashing input keyboard brief description dec. hex. close EXEC or SPOOL files check for EOF of open file fast Tube BPUT read/write CFS timeout counter *TAPE/*ROM switch read/write EXEC file handle read/write SPOOL file handle flashing col. mark duration flashing col. space duration read/write flash counter read/write mark period count read/write space period count select I/P stream read/write input source auto—repeat delay auto—repeat rate reflect keyboard status in LEDs write current keys pressed perform keyboard scan perform keyboard scan from 16 read key with time limit read key translate address 119 127 157 176 183 198 199 9 10 193 194 195 2 177 11 12 118 120 121 122 129 172 173 178 196 197 201 202 219 220 + read/write keyboard semaphore read/write auto—repeat delay read/write auto-repeat period read/write net keyboard disable read/write keyboard status read/write TAB key value read/write ESCAPE key value 77 7F 9D B0 B7 C6 C7 9 A C1 C2 C3 2 B1 B C 76 78 79 7A 81 AC AD B2 C4 C5 C9 CA DB DC 451
