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- From: richardw@hub.parallan.com (Richard Walter)
- Newsgroups: comp.sys.ibm.ps2.hardware
- Subject: Re: Disk port commands
- Message-ID: <Lqy2TB1w164w@hub.parallan.com>
- Date: 11 Nov 92 02:14:20 GMT
- References: <gilchr.721390232@ee.ualberta.ca>
- Organization: Parallan Computer, Mountain View CA
- Lines: 25
-
- gilchr@ee.ualberta.ca (Andrew Gilchrist) writes:
-
- >
- > I need a description of the floppy port commands (3f0-3f7) for my
- > PS/2 (55sx). The hard drive port commands would be handy too.
- >
- > Doesn't anyone out there have this information? The crowd on comp.os.msdos.*
- > were decidedly unhelpful in this matter.
- >
-
- Well, what you want is to get a copy of the datasheet for the Intel
- 82077 chip. This is a single chip 100% PS/2 compatible floppy controller.
- The data sheet tells you all about what the registers are and how to
- use them. You can find the data sheet in the "Peripherals" data book
- from Intel. The date on mine is 1990, so presumably anything later
- should have it; I don't know about earlier.
-
- You should also be able to get some sort of Programmers reference thing
- from IBM which details the ports on not only the floppy, but also all
- of the other "public" ports in the PC and PS/2's.
-
- Hope this helps....
-
- Richard Walter
- richardw@parallan.com
-