Recent content by eswan

Kodak Document Archive Writer- Takes tiff images and writes them to microfilm. VME based system running a WindRiver OS. Way past it's 'best used by' date, interfaces to the network using a 15-pin ethernet MAU. Was new in '99. Still in use as of 2022.

This guy seems to know the 1000 joystick interface inside and out: https://nerdlypleasures.blogspot.com/2016/08/the-tandy-1000-digital-joystick-adapter.html Might try the test programs he suggests: >> In order to test joysticks, I use a pair of calibration programs. The first is...

The ram/serial/rtc card is a Tecmar '1st Mate' (Model name just below the ram).

The 1000 joystick is the same as the TRS80 Color Computer's. Should be able to measure resistance from the wiper to ground and see it going from very low to around 100k ohm (I think), and the same between the wiper and +5v. On the 1000, I'd check and make sure it's putting out 5v on the joystick...

That 'AUDIO 103(5)' card looks to me like a VU meter from an early 80's boombox.

Watching this as my 4p does the exact same thing, not horribly but occasionally. Seems worse as it warms up if I remember correctly.

Ah, sounds like it doesn't support 4 meg simms then. I've got a very early 486dx motherboard like that - 16 slots, 16 meg total. Doesn't connect the A11 address line to the simms for 4 meg.

386sx takes 'em in pairs, I'd go for a matched set of 4 4MB 60ns, 9 chip if you can find it cheap enough. It's possible that it only supports up to 1 meg modules, but I don't see how you'd get to 16MB that way.

My guess is JP9 is cmos clear. The one near U11, turbo maybe? What's a typical near kb controller jumper? Bus speed?

Looks like every other chip is from a different manufacturer. I see Motorolla, Philips, Intel, Toshiba, TI. Only 3 wires going to the connectors, and it looks like the two connectors are wired together in parallel.

Probably due to the portrait orientation monitor.

On the second pic, right above the negative terminal of the battery I think are two of the lines for the ps/2 mouse. Right above the silkscreen outline for the battery. Could just be the lighting but they look a bit iffy to me.

That type of setup is identical to the ones with ps/2 mouse and keyboard, just setup for an AT motherboard instead of ATX. Mouse and keyboard are on the same controller, an 8042 compatible integrated in the floppy/ide/serial/etc controller the National Semi PC87303 on that particular board. You...

Not sure what bios options you have, but I'd check and see if the ISA bus is maybe running too fast.

Watch out for screwey sector sizes, some of those things used 2048 instead of 512.