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Just an update as I won't have much time to work on it now for a couple of weeks but this thread is serving as a bit of a handy journal too :-). I've built a DRAM tester and it's confirmed that the 3 x 4116 chips I pulled from bank 0 and the one from bank 3 are faulty. I've also tested the...

MZD - check this out. What a sight for sore eyes.

Well that's absolutely fascinating and helps swing in the direction of the MDA not being faulty at least That is truly astonishing and an awesome find. I'm very much looking forward to testing it out. I spent the entire day removing the 3 faulty DRAM chips in bank 0 which was absolutely...

Come on, that's a little harsh. If it ends up in the hands of someone who cherishes it, that's awesome but also each to their own. If I owned a 1970s mustang, I'd be more interested in what it was worth than keeping it, but with the money I could buy more retro computers to the point I'd be...

I should also add, that the U28 test fails sometimes and passes other times, which considering it's empty is also confusing, but perhaps alludes to an addressing issue

It may be partially faulty as you say, all I can state is that it works in the 486 I have when using Monochrome in the BIOS and appears to work with the Supersoft ROM, yet not the original BIOS or RDR. Of course those won't be exhaustive tests at all. Do you know if the SuperSoft and RDR ROM...

And yet still nothing from the RDR or native BIOS which is really confusing...

OK, for some reason SuperSoft was trying to detect up to 640K when the serial card was plugged in. Once I removed that it stopped trying to test beyond 64K which seems more normal After that the RAM tests looked a bit more reliable and I confirmed that Bit 7 in Bank 3 was faulty and indeed the...

Swapped the ROM out to the Supersoft ROM and the MDA card and the 5151 fired up - this is repeatable with the SuperSoft ROM, but I never get any display with RDR or the original BIOS. One thing that is confusing me though, is it seems to be testing memory up to 640K but I don't know if that's...

Just an update on the current state. I've built a proper ROM adapter so I can now use an M27C64 for the BIOS and I've installed RDR 4.7 in it. Finally with a serial card installed I see: 33 0 2 3 4 6 8 9 A t8A Output to the terminal, which tells me it's executing all the way up to step 18 and...

As a huge Amiga fan also, I loved those touches in OpenMediaVault. I can see it does support NFS2. The current version doesn't seem to have a plugin for remotely mounting file systems and then re-exporting them as ultimately my main goal is to keep everything on my primary server but I don't...

Thanks, I will look into that

Yes you're right and I use convmvfs to work around that. I've no doubt there's good reasons but when I'm mounting NFS from AIX on a PS/2, it probably isn't in their typical use case, nothing mission critical about this, just convenience :)

If you have a stash of cards sat there not doing anything, why not use one of them? I'm not so sure that there's such a thing as a readily available and somewhat inexpensive ISA sound card, but really it depends on your definition. I mean I saw a NOS GUS go for $450. To some that might have been...

I'm currently using a Linux (Fedora) VM to re-export a specific NFSv4 export as NFSv2 (for old UNIXes) and also using Samba to export it basically as SMB 1 for old DOS clients. I have to recompile the linux kernel to even enable NFS v2 and if not already, it will be entirely removed from the...

OK, here's what I've found so far. 36 Pin Internal Connector Pins 18-26 GND No voltage pins 25 Pin External Connector: Pins 18-25 GND No voltage pins Card Pins IRQ 7 Only +5V (no +12V, -12V or -5V connected) Only really I/O read and write connected with some address and data lines So to me...

I can certainly do that. I'll grab the multimeter and report back. The only 'history' of this particular machine I know was that it was used in a pharmacy in the 80s, in case that adds any context

Sadly no FCC sticker. The only ID I see on the rear is "GX-211-VO" which I don't think has anything to do with the card itself but maybe something involved in the manufacture. U2 is a Mitsubishi logic chip - M74LS74AP - flip flops & latches

So for the hard disk controller, I see no strings in the BIOS which says "PRESS A KEY TO REBOOT", so I suspect on my 486 it is actually booting from the ST213 and the message is coming from the MBR - maybe everything has been erased. So I'm 99% sure the HD controller works. The MDA card...

For sure, unfortunately the T48 I have won't read the firmware from the MCS-48 natively and I'm not smart enough to figure out how to produce an adapter to at least allow the EPROM contents to be read. However plugging the card into an AT box, I don't see any option ROMs present in the memory...