Re: GandALF, sub for 1541 custom IC MOS 325572-01
Posted: Tue Aug 08, 2017 12:57 am
Man, I didn't know you had an Indus GT. Was it any good?
(Also, FYI, it's "discrete". )
(Also, FYI, it's "discrete". )
Commodore 8 bit madness!
https://www.melon64.com/forum/
It was nice looking and produced much less heat than an original 1541 with the PSU being external but it didn't have any striking features that would make it preferable to a drive like a 1571, since it was about the same price.Gyro Gearloose wrote: ↑Tue Aug 08, 2017 12:57 amMan, I didn't know you had an Indus GT. Was it any good?
Francois,
I'm happy to report that your module works fine. I ran two
drives and copied whole disks and then individual files back and
forth, first with a copy program in a stock drive and then with
JiffyDOS installed which runs faster and is more critical of
misalignment and other problems. I found no difference between
GandALF and the stock controller chip. The programs I copied fill
virtually all of a disk and thus check drive operation at the
disk track limits. For most computer and drive diagnostics, test
software and firmware is fine but I prefer to "test it in combat"
in a real world setup. I's say your chip is ready for prime time.
Thanks!
Ray
No mods required. It's supposed to be a drop-in replacement but short circuits on faulty boards can damage the XC9572XL CPLD.T4077 wrote: ↑Wed Mar 09, 2022 9:24 pm I purchased this last week and it does seem to work correctly. Originally with the faulty drive array chip i was getting stepper motor juddering but spindle motor was working ok. With this chip i get no spindle motor control but the stepper motor working ok.
My pcb number is 250442 .
Is there any mods that need to done to make this chip compatable?