20 Aug
1997
20 Aug
'97
2:21 p.m.
Well, today I decided to repair the power supply on the Percom floppy that I have for
my pair of Model I's. Then, I decided to see if a complete keyboard-EI-floppy setup
worked. Therein lies the problem...
It seems like each CPU (a 4k and a 16k Level II) won't recognize either EI (a Rev
0 and Rev 1). Both EI's have 32k of RAM. All that I get on the screen is garbage.
I'm turing the EI on first, then the CPU. I've also tried two types of EI cables,
one buffered and one not. I can tell which cable goes to which EI because the floppy drive
will initialize only with the right combo.
It sounds like I have two bad EI's, but the thing that throws me is that the
floppy interface performs a floppy reset.
Does anyone have any clue?? Also, how does one refer to the floppy drive in a BASIC
statement? For example, if I want to load a program, do I type LOAD
"0:test.bas"? I have no manuals for these machines, and it's been a loooong
time since I used one of these.
Also, on an unrelated note, the Altair scans are in, but I'm waiting for Bill
Whitson's address so that I can Fedex a tape to him. Does anyone have it??
Rich Cini/WUGNET
<rcini(a)msn.com>
20 Aug
20 Aug
2:52 p.m.
On Wed, 20 Aug 1997, Richard Cini wrote:
Well, today I decided to repair the power supply on
the Percom floppy
that I have for my pair of Model I's. Then, I decided to see if a
complete keyboard-EI-floppy setup worked. Therein lies the problem...
Well FIRST I want to say - this is a Classic Computer Group - I don't
want to see ANY MORE HTML Email! Especially off a Winders Machine!
8-) 8-) 8-)
It seems like each CPU (a 4k and a 16k Level II)
won't recognize either
EI (a Rev 0 and Rev 1). Both EI's have 32k of RAM. All that I get on the
screen is garbage. I'm turing the EI on first, then the CPU. I've also
tried two types of EI cables, one buffered and one not. I can tell which
cable goes to which EI because the floppy drive will initialize only
with the right combo.
I think you have to hold down the Break Key when you turn on the
Keyboard/CPU. That will get you into BASIC.
It sounds like I have two bad EI's, but the thing
that throws me is that
the floppy interface performs a floppy reset.
Could be just a power on reset.
Does anyone have any clue?? Also, how does one refer
to the floppy drive
in a BASIC statement? For example, if I want to load a program, do I
type LOAD "0:test.bas"? I have no manuals for these machines, and it's
been a loooong time since I used one of these.
Well, it has to boot into DOS first then - I don't remember - 8-) I would
have to look it up.
Also, on an unrelated note, the Altair scans are in,
but I'm waiting for
Bill Whitson's address so that I can Fedex a tape to him. Does anyone
have it??
Ask him 8-)
BC
21 Aug
21 Aug
1:53 a.m.
On Wed, 20 Aug 1997, Richard Cini wrote:
It seems like each CPU (a 4k and a 16k Level II)
won't recognize =
either EI (a Rev 0 and Rev 1). Both EI's have 32k of RAM. All that I get =
on the screen is garbage. I'm turing the EI on first, then the CPU. I've =
also tried two types of EI cables, one buffered and one not. I can tell =
which cable goes to which EI because the floppy drive will initialize =
only with the right combo.
You've already been given the message concerning the BREAK-RESET on
power-up. I thought I'd mention that that should work fine with the
16k CPU. The 4k CPU won't recognize the RAM in the EI - the self
test will notice that there's nothing past 4k and not look further.
You could write a program to _manually_ initialize the EI memory and
poke values into it, but BASIC can't see it. About all an EI gives
to a 4k CPU is a parallel port and an extra cassette port -- TRSDOS
(or any of the alternates) sure won't fit.
--
Ward Griffiths
"the timid die just like the daring; and if you don't take the plunge then
you'll just take the fall" Michael Longcor
9:02 a.m.
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1:36 p.m.
On Thu, 21 Aug 1997, Tony Duell wrote:
Also! Remember that the last drive in the chain must be the model 1160
as it is the one with the terminator! If you don't have an 1160 it may not
boot at ALL. If you have both, the first drive (I think) is always drive 0
and that is where the boot disk should go.
BC
Does
anyone have any clue?? Also, how does one refer to the floppy =
It sounds like it might be working. It's been a long time since I booted my
Model 1, but from memory, if the ROM basic detects a disk controller, it
attempts to boot from drive 0, and hangs if it can't do so.
22 Aug
22 Aug
2:19 a.m.
On Thu, 21 Aug 1997, Brett wrote:
On Thu, 21 Aug 1997, Tony Duell wrote:
I've run enough Mod I systems with no termination, with multiple,
the things aren't picky. The only reason to buy a 26-1160 was to
get the DOS and documentation, otherwise you could save $100 and
get a 26-1161 and if you were worried about it you could go next
door to the regular Radio Shack (my RSCC was adjacent) and buy a
terminator for $.99. Nobody that I knew ever bought two 26-1160
drives.
--
Ward Griffiths
"the timid die just like the daring; and if you don't take the plunge then
you'll just take the fall" Michael Longcor
It sounds like it might be working. It's been
a long time since I booted my
Model 1, but from memory, if the ROM basic detects a disk controller, it
attempts to boot from drive 0, and hangs if it can't do so.
Also! Remember
that the last drive in the chain must be the model 1160
as it is the one with the terminator! If you don't have an 1160 it may not
boot at ALL. If you have both, the first drive (I think) is always drive 0
and that is where the boot disk should go.
9984
days inactive
9986
days old
5 comments
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