16 Oct
2020
16 Oct
'20
7:03 p.m.
BTW -
IF you look at advertisements in the 1985-86 PC magazines, this was typical:
PC Network (Mail-Order/Telephone reseller).
PC NETWORK SIX-PACK? CLONE with 0K $89.00*
Full Six-Pack? Features ?Game Port Standard. Direct Import from Taiwan at a Fabulous
Price!
==
The ?unknown? is whether the AST software utilities, ASTCLOCK and SETCLOCK
will work with National/TI clock chip in your Taiwanese multi-function card.
Some worked with it, others did NOT.
==
Jumpers behind the DB-25M serial port will be for
Serial Port configuration (IRQ, memory address).
Parallel Port will have jumpers for LPT1 or LPT2 (Monographic card installed, add 1).
==
The 6-switch (DIP) will be ?binary? for RAM installed & starting RAM address (256k?).
greg
On Oct 16, 2020, at 1:15 PM, Greg Beat <w9gb at
icloud.com> wrote:
Sean, Fred, and Glen ?
Sorry, late to this ISA card thread.
I worked in Tech Support for an Apple/IBM/HP/Novell retail computer dealer,
during summers in early 1980s, when in Graduate school.
So I saw the ?wide selection? of add-in cards for IBM PC/XT and compatibles.
==
This is a ?Taiwanese generic 6-Pak? Add-In (8-bit ISA) expansion card.
RAM 384 kB; Serial port, Parallel port, Game port, AND Real Time Clock !
Glen is CORRECT, the National Semiconductor MM58167 is the RTC IC.
Texas Instruments bought out National in 2011, data-sheet still available.
The ?solder-in? B1 battery has been cutout (open space below/left of MM58167).
Replacement battery (likely ~ 3 to 3.6 Volt) can be acquired from Digi-Key.
Take measurements and closeup photo of ?B1? Area, to CONFIRM Model and Size.
?
My Quick Guess ?
Tadiran TL series 1/2 AA with Axial pins, 3.6V High Capacity Cylindrical battery
http://www.tadiranbat.com/assets/tll-5902.pdf
Tadiran TL-5902/P .... $6.65
https://www.digikey.com/en/products/detail/tadiran-batteries/TL-5902-P/5125…
greg, w9gb
chicago
===
Date: Thu, 15 Oct 2020 17:34:58 -0700
From: Glen Slick <glen.slick at gmail.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Subject: Re: Identifying a Mystery ISA Card
On Thu, Oct 15, 2020, 5:24 PM Fred Cisin via cctalk <cctalk at classiccmp.org>
wrote:
It resembles, although doesn't match, the AST Six-Pack.
But the AST Six-pack had a clock circuit.
Isn't the 24-pin DIP part number MM58167 ,shown in the images referenced above,
an RTC chip?
On Thu, 15 Oct 2020, Sean Ellis via cctalk wrote:
I got this (currently exploded) mystery RAM, RTC, and I/O board out of
a dead Sanyo luggable the other night, and once I replace the burned
up tantalums I'd like to put it in my 5150 so I can get a full 640k of
RAM.
Question is, does anyone know what this board is? It's a completely
anonymous board with not even an FCC ID to go off of. I'm assuming the
RAM is at least strapped right; all the banks are full which should be
384k, and the Sanyo was a 256k machine = 640k.
Here's a couple pictures; one's an actual picture of the card and the
other is a simplified TULARC/TH99-esque vector of what's on the board.
https://i.imgur.com/WhO4cco.jpg
https://i.imgur.com/uBCkv5G.png 
