30 Aug
2006
30 Aug
'06
6:16 p.m.
Hope to generate less heat this time.
Full length ISA card, XT card edge connection, DB 37 male connector,
Z80B, 8 4164's, 2 2764's, 2 Mostek MK4801AN-4's, MC1420B, 10 MHZ
crystal, and a handful of 74LSxxx glue chips. Only identification
lettering is "BETRONIX = SWEDEN=PC84"
Anyone have an ideal what it could be? Betronix made circuit board
layout software.
31 Aug
31 Aug
5:18 a.m.
Am 30 Aug 2006 20:16 meinte Choctaw Bob:
Hope to generate less heat this time.
Full length ISA card, XT card edge connection, DB 37
male connector,
Z80B, 8 4164's, 2 2764's, 2 Mostek MK4801AN-4's, MC1420B, 10 MHZ
crystal, and a handful of 74LSxxx glue chips. Only identification
lettering is "BETRONIX = SWEDEN=PC84"
Well, what do we have:
Z80
64K RAM
16K ROM
2 K Dual Port RAM
M_C_ 1420? MK1420 would be an oscilator
Do you got some detailes pictures?
To me this looks like eitner a Z80 coprocessor card
to run CP/M, or, more some kind of control interface -
that's what the DB connector would suggest.
Betronix was/is a small company here in Muncih (haven't
heared of them in years) - I'm not shure if it's related.
Gruss
H.
--
VCF Europa 8.0 am 28/29.April 2007 in Muenchen
http://www.vcfe.org/
11:06 a.m.
I don't know about this particular board but several companies did build
Z-80 boards to fit into a PC an allow you to run CPM. I used to have one
made by Baby Blue or some such.
Joe
At 08:16 PM 8/30/06 -0500, you wrote:
Hope to generate less heat this time.
Full length ISA card, XT card edge connection, DB 37 male connector,
Z80B, 8 4164's, 2 2764's, 2 Mostek MK4801AN-4's, MC1420B, 10 MHZ
crystal, and a handful of 74LSxxx glue chips. Only identification
lettering is "BETRONIX = SWEDEN=PC84"
Anyone have an ideal what it could be? Betronix made circuit board
layout software.
3:32 p.m.
>Full length ISA card, XT card edge connection, DB
37 male connector,
>Z80B, 8 4164's, 2 2764's, 2 Mostek MK4801AN-4's, MC1420B, 10 MHZ
>crystal, and a handful of 74LSxxx glue chips. Only identification
>lettering is "BETRONIX = SWEDEN=PC84"
Have you tried plugging this one into a running PC to see if there are any
ROM signon messages displayes? Ultimately, what this thing is may well be
revealed by what's in those 2764's.
Just a thought...
Chuck
1 Sep
1 Sep
4:02 a.m.
At 03:32 PM 8/31/06 -0700, you wrote:
FWIW the card that I had required SW drivers and didn't show anything
when you booted the PC. I was never able to find drivers so I finally
dumped the card.
Joe
>Full length
ISA card, XT card edge connection, DB 37 male connector,
>Z80B, 8 4164's, 2 2764's, 2 Mostek MK4801AN-4's, MC1420B, 10 MHZ
>crystal, and a handful of 74LSxxx glue chips. Only identification
>lettering is "BETRONIX = SWEDEN=PC84"
Have you tried plugging this one into a running PC to see if there are any
ROM signon messages displayes? Ultimately, what this thing is may well be
revealed by what's in those 2764's.
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