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Bit Name Function
7 SRUN Speaker source (0=SBIT, 1=TxD or 3200Khz3200 Hz)
6 SBIT SRUN=0: 0=low, 1=high; SRUN=1: 0=3200 KhzHz, 1=TxD
5 OVERP Set to overprogram EPROMs
4 RESTIM Set to reset the RTC, clear to continue
3 PROGRAM Set to enable EPROM programming
2 RAMS Binding of lower 8K of segment 0: 0=bank 0, 1=bank 20
1 VPPON Set to turn programming voltage ON
0 LCDON Set to turn LCD ON, clear to turn LCD OFF
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