On Thu, 5 May 2022, Bill Gunshannon via cctalk wrote:
On 5/5/22 13:34, Mike Loewen via cctalk wrote:
On Thu, 5 May 2022, Bill Gunshannon via cctalk wrote:
Next step...
Apparently mu original Tandon floppy has bought the farm.
Does anyone know what the jumper setting are for a
TEAC FD-55GFR-149 for the TRS-80 4P?
I tried the usual (like for a DEC RX-33) but that didn't
fly. Every sector fails verify after a format. I am sure
it's a jumper thing.
The FD-55GFR is a 1.2MB drive, double-sided. The Model 4P used 360K
drives (possibly Teac FD-55A), single-sided as installed at the factory.
Are you sure that's the model number that was in your 4P?
I know it wasn't. The original was a Tandon 50. But the TEAC
FD-55GFR (in various flavors) was used in a lot of systems and
at least one website said they were used in the 4P. It is an
extremely configurable drive that I have used for numerous DEC
systems (even the infamous RX50!) I have several of them and
it should work just fine if I can find the magic jumper combination.
bill
This article talks about settings for the FD-55GFR on page 41:
https://www.tim-mann.org/trs80/doc/TMQ%20Vol%20VII.i.pdf
Mike Loewen mloe...@cpumagic.scol.pa.us
Old Technology http://q7.neurotica.com/Oldtech/
