1541 board in a 1541C drive possible?

matsondawson · Post by **matsondawson** » Mon Mar 22, 2010 3:20 am

Will this work if I just swap over the roms?

Bacon · Post by **Bacon** » Mon Mar 22, 2010 8:44 am

No need to swap ROMs; the 1541 and 1541C ROMs are identical AFAIK. But depending on the type of mechanism in the drive the 1541 board may not be compatible anyway.

matsondawson · Post by **matsondawson** » Mon Mar 22, 2010 1:32 pm

Really? But the 1541C has a zero track detector... This wont be in the 1541 roms.

Bacon · Post by **Bacon** » Tue Mar 23, 2010 1:43 am

matsondawson wrote:Really? But the 1541C has a zero track detector... This wont be in the 1541 roms.

True, at least for some 151Cs. The two 1541Cs I have owned had identical internals to the 1541, only the drive mechanism differed – they had the newer mech with a lever on the front.

Later 1541C drives had a revised board with one 16K ROM instead of the two 8K ROMs in the older model, as well as the zero track sensor. Or am I completely wromg on this?

ral-clan · Post by **ral-clan** » Thu Mar 25, 2010 5:59 am

Bacon wrote:
matsondawson wrote:Really? But the 1541C has a zero track detector... This wont be in the 1541 roms.
True, at least for some 151Cs. The two 1541Cs I have owned had identical internals to the 1541, only the drive mechanism differed – they had the newer mech with a lever on the front.

Later 1541C drives had a revised board with one 16K ROM instead of the two 8K ROMs in the older model, as well as the zero track sensor. Or am I completely wromg on this?

I am sort of fuzzy on the issue, but I thought only the 1570 and 1571 had zero-track detectors. I had thought the 1541-II had it, but someone told me it didn't.

As for the 1541C - it was my impression it was just a 1541 made to match the C64C and was internally identical.

Of course, I'd love to know the real deal if I'm wrong.

matsondawson · Post by **matsondawson** » Thu Mar 25, 2010 1:30 pm

Yup, the one I have has a zero track detector in it.