Vamiga: DiagRom 1.2: Drive test

Created on 16 Mar 2020  路  1Comment  路  Source: dirkwhoffmann/vAmiga

Install DiagRom 1.2
Insert any disk
Select "Drive tests"
Hit 2 to turn on motor

SAE:

Bildschirmfoto 2020-03-16 um 18 54 43

vAmiga: 馃き

Bildschirmfoto 2020-03-16 um 18 54 52

Bug invalid

Most helpful comment

False alarm. What we see here is a configuration issue. The RDY bit is used to transmit the drive identification code when the motor is off. SAE transmits a 0 because it emulates the internal drive as having a drive ID. Most old Amigas (such as the A500) use internal drives that don't transmit a drive ID (meaning that RDY stays 1 which is displayed as NO). If SAE is configured explicitly to emulate an A500, the output matches what can be seen in vAmiga.

Bildschirmfoto 2020-03-18 um 07 57 28

>All comments

False alarm. What we see here is a configuration issue. The RDY bit is used to transmit the drive identification code when the motor is off. SAE transmits a 0 because it emulates the internal drive as having a drive ID. Most old Amigas (such as the A500) use internal drives that don't transmit a drive ID (meaning that RDY stays 1 which is displayed as NO). If SAE is configured explicitly to emulate an A500, the output matches what can be seen in vAmiga.

Bildschirmfoto 2020-03-18 um 07 57 28

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