1 Jan
2001
1 Jan
'01
2:02 p.m.
From: jpero(a)sympatico.ca <jpero(a)sympatico.ca>
This is microcontroller chip commonly found on clones till post
pentium packaged in 40 pin DIP. After that, non-legacy and embedded
8042's in chipsets in newer boards and later.
Right now I need the pin info where clock goes into that 8042 so I
could bypass current clock source. Motherboard's clock generator is
sick. Most of it is partially working, which is very common on one
brand chipmaker. !! Do it by injecting 8042 directly with crystal
xtal or use 4 pin oscillator ic. Need Mhz as well, 12Mhz?
Pin 2 is X1 (clockin) and Pin 3 is clock out.
Same pinout as 8041/8741/8742
Allison
1 Jan
1 Jan
4 p.m.
New subject: switch settings for a Mistubishi MR535-U00 ???
I've got a couple of these that I'd like to press into service, as they're
the right size and shape. Can somebody tell me what the switches do?
thanks,
Dick
----- Original Message -----
From: "ajp166" <ajp166(a)bellatlantic.net>
To: <classiccmp(a)classiccmp.org>
Sent: Monday, January 01, 2001 9:02 PM
Subject: Re: datasheet for intel compatiable 8042 ic.
From: jpero(a)sympatico.ca <jpero(a)sympatico.ca>
This is microcontroller chip commonly found on clones till post
pentium packaged in 40 pin DIP. After that, non-legacy and embedded
8042's in chipsets in newer boards and later.
Right now I need the pin info where clock goes into that 8042 so I
could bypass current clock source. Motherboard's clock generator is
sick. Most of it is partially working, which is very common on one
brand chipmaker. !! Do it by injecting 8042 directly with crystal
xtal or use 4 pin oscillator ic. Need Mhz as well, 12Mhz?
Pin 2 is X1 (clockin) and Pin 3 is clock out.
Same pinout as 8041/8741/8742
Allison
5:36 p.m.
New subject: switch settings for a Mistubishi MR535-U00 ???
-----Original Message-----
From: owner-classiccmp(a)classiccmp.org
[mailto:owner-classiccmp@classiccmp.org]On Behalf Of Richard Erlacher
Sent: Monday, January 01, 2001 10:01 PM
To: classiccmp(a)classiccmp.org
Subject: switch settings for a Mistubishi MR535-U00 ???
I've got a couple of these that I'd like to press into service, as they're
the right size and shape. Can somebody tell me what the switches do?
There is a very nice set of diagrams in HTML format starting here:
http://www.pc-disk.de/pcdisk/h/3000/2746.htm
or in ASCII format here:
http://www.pc-disk.de/pcdisk/h/ASCII/2746.TXT
2 Jan
2 Jan
5:44 a.m.
New subject: switch settings for a Mistubishi MR535-U00 ???
At 11:00 PM 1/1/01 -0700, Richard Erlacher wrote:
I've got a couple of these that I'd like to
press into service, as they're
the right size and shape. Can somebody tell me what the switches do?
Boy, I must be getting old if I can supply answers like this.
I had a pair of them in a 386/20 ten-plus years ago. I have
a poorly faxed spec sheet: drive type 17, SW1 is termination
(leave open (off) if installed as a second drive), and
SW2 is the drive selection. They're not binary, they're
sequential, so shorting the first pair makes it drive 1,
only the second pair makes it drive 2, etc. In the same
folder, I have the spec sheets for the WD RLL controller,
if you need those. I can't quite read what the rightmost
four on SW2 do, but it gives me the impression they stay
"off" or at whatever config they ship with.
- John
6:54 a.m.
New subject: switch settings for a Mistubishi MR535-U00 ???
Actually, only the upper three of the rightmost four switches stay off. The
one marked 'R' has to be on for radial selection to work. I don't know what
happens if it's off, but that's no matter. I think it 's intended for use
where there's only one drive.
This isn't for a PC, so the WD controller probably isn't relevant. I'm
setting up to use a WD 1002-05 to handle both the floppy and hard disks on a
small SBC.
Dick
----- Original Message -----
From: "John Foust" <jfoust(a)threedee.com>
To: <classiccmp(a)classiccmp.org>
Sent: Tuesday, January 02, 2001 12:44 PM
Subject: Re: switch settings for a Mistubishi MR535-U00 ???
At 11:00 PM 1/1/01 -0700, Richard Erlacher wrote:
>I've got a couple of these that I'd like to press into service, as
they're
the right size
and shape. Can somebody tell me what the switches do?
Boy, I must be getting old if I can supply answers like this.
I had a pair of them in a 386/20 ten-plus years ago. I have
a poorly faxed spec sheet: drive type 17, SW1 is termination
(leave open (off) if installed as a second drive), and
SW2 is the drive selection. They're not binary, they're
sequential, so shorting the first pair makes it drive 1,
only the second pair makes it drive 2, etc. In the same
folder, I have the spec sheets for the WD RLL controller,
if you need those. I can't quite read what the rightmost
four on SW2 do, but it gives me the impression they stay
"off" or at whatever config they ship with.
- John
8537
days inactive
8538
days old
4 comments
4 participants
participants (4)
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ajp166＠bellatlantic.net -
broekh＠interchange.ubc.ca -
edick＠idcomm.com -
jfoust＠threedee.com