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 <[email protected]> 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/512507 > > greg, w9gb > chicago > === > Date: Thu, 15 Oct 2020 17:34:58 -0700 > From: Glen Slick <[email protected]> > To: "General Discussion: On-Topic and Off-Topic Posts" > <[email protected]> > Subject: Re: Identifying a Mystery ISA Card > > On Thu, Oct 15, 2020, 5:24 PM Fred Cisin via cctalk <[email protected]> > wrote: > >>>> 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 >> >> 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?
