Re: P112 Floppy Controller

2022-04-23 Thread Fred Cisin via cctech

On Sat, 23 Apr 2022, Craig Ruff via cctech wrote:
The P112's floppy controller is the one in the SMSC FDC37C665IR SuperIO 
chip. The data sheet states it is a 2.88 MB "Licensed CMOS 765B Floppy 
Disk Controller" and claims 100% IBM compatibility (for what that's 
worth).


2.8M (it is not "2.88" unless MB is 1024,000) means that it includes a 
1000K data transfer rate


765B means essentially the same FDC as PC (NEC 765 based)

Does it also support FM?   125K data transfer rate (TRS80, Early Osborne)


Re: P112 Floppy Controller

2022-04-23 Thread Craig Ruff via cctech
The P112's floppy controller is the one in the SMSC FDC37C665IR SuperIO chip. 
The data sheet states it is a 2.88 MB "Licensed CMOS 765B Floppy Disk 
Controller" and claims 100% IBM compatibility (for what that's worth).