Search \ VOGONS

Re: Anybody recognises this MDA card?

Posted on 2021-09-18, 11:31

The wires you see on the first photo were connected to an external switch to select between the character ROMs. Good to know that the LPT could be disabled: I already have one on my multi-io card. Is it closed disabled or open disable, do you know?

Re: Anybody recognises this MDA card?

Posted on 2021-09-18, 11:29

by Badscrew

in Marvin \ Video

I'll need to make a DE9 to DIN6 cable now...

Re: Anybody recognises this MDA card?

Posted on 2021-09-18, 08:48

by Badscrew

in Marvin \ Video

A real winbond for reference

Re: Anybody recognises this MDA card?

Posted on 2021-09-18, 08:45

by Badscrew

in Marvin \ Video

looks like a Winbond clone, but by whom?

Anybody recognises this MDA card?

Posted on 2021-09-18, 08:34

by Badscrew

in Marvin \ Video

Got it from ebay, listed as MDA/Hercules. Would like to know more like brand or make? Will be pairing it with my amber monochrome monitor, hope this works 😀

Re: Monochrome monitor 'Philips 7BM723/00B' video pinout

Posted on 2021-08-28, 17:10

by Badscrew

in Marvin \ Video

I've just got the same monitor, and this is a very useful info indeed 😀

Re: Varta's out. Now what?

Posted on 2021-08-23, 17:05

by Badscrew

in Marvin \ General Old Hardware

Close enough!

Re: Varta's out. Now what?

Posted on 2021-08-23, 14:36

by Badscrew

in Marvin \ General Old Hardware

It doesn't seam to - and it's also a weird off-brand 486 MB I can't find the docs to. I have like dozens of diodes anyway, so not a big deal :) Also, using a diode with 3 alkalines will drop the voltage from 4.5 to about 3.8- 3.9V that will be closer to 3.6. Not that BIOS should care anyways but at …

Re: Varta's out. Now what?

Posted on 2021-08-22, 20:36

by Badscrew

in Marvin \ General Old Hardware

Regulars are cheaper 😁

Re: Varta's out. Now what?

Posted on 2021-08-22, 18:46

by Badscrew

in Marvin \ General Old Hardware

Leaning towards 3 AAA in a holder and a diode myself. Cheap and effective, easy maintenance.

Re: Varta's out. Now what?

Posted on 2021-08-22, 14:19

by Badscrew

in Marvin \ General Old Hardware

Oh wait these LIR 2032 are 3.6 or 3.7 V, not 3.2 as I was thinking. Worth a look then, interesting

Re: Varta's out. Now what?

Posted on 2021-08-22, 14:17

by Badscrew

in Marvin \ General Old Hardware

LIR2032 is a drop in rechargeable replacement for a CR2032 but not for the 3.6V Varta ? 😁

Re: Varta's out. Now what?

Posted on 2021-08-22, 13:24

by Badscrew

in Marvin \ General Old Hardware

How about using a pack of three low capacity Ni-MH AAA rechargeables? Will this work as an easy drop-in? My MB doesn't have any dedicated "external battery" pins, only the ones where the Varta was soldered on.