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