[comp.sys.atari.st.tech] H/W: Screen Out of Sync.

mark@retix.retix.retix.com (Mark Hoy) (09/01/90)

System: Atari 2 MEGA with 6 chip TOS 1.4

Recently my brother bought a 85 Meg TOAD computer harddisk. When the
harddisk is accessed there is a good chance of having the screen loose
sync and be impossible to read. If you are page flipping there is some
chance of sync being restored but part of the right hand side of the
screen is over on the left hand side. Happily the harddisk works
flawlessly with my 2.5Meg ST so I think that the harddrive is fine.

All in all I suspect noise is getting into the circuit during heavy
DMA. Anyone else have this problem? Anyone have a solution to the
problem. TOAD and ICD have not seen this problem but are quite willing
to help swap parts but I suspect the MEGA not the harddisk unit.

THANKS in advance.
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