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DIAGNOSTIC:-Alter-SIO-Timing-for-T4
This is a command for Device $70 - The FujiNet Device itself (see SIO-Commands-for-Device-ID-$70).
Alter SIO Timing for T4 ($B4)
Description
Alters the Timing value (in microseconds) for Timing value 4.
From the Atari Hardware Manual:
The peripheral generates a delay (t4) between the transmission of
the last bit of the data frame and the receipt of the first bit
of the ACK byte by the computer.
computer t4 (min) = 850 microsec.
computer t4 (max) = 16 msec.
peripheral t4 (min) = ??
peripheral t4 (max) = ??
Parameters
| DCB | Value |
|---|---|
| DDEVIC | $70 |
| DUNIT | $01 |
| DCOMND | 0xB4 |
| DSTATS | 0x00 |
| DBUF | NULL |
| DTIMLO | 0x0F |
| DBYT | 0 |
| DAUX | 16-bit value containing # of microseconds in little-endian order |
Examples
See thwap tool, for examples of how to alter this value:
GitHub Link
See Also
- DIAGNOSTIC: Alter SIO Timing for T0
- DIAGNOSTIC: Alter SIO Timing for T1
- DIAGNOSTIC: Alter SIO Timing for T2
- DIAGNOSTIC: Alter SIO Timing for T3
- DIAGNOSTIC: Alter SIO Timing for T5
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