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My first ever Atari (excluding an old Woody console) - a 520STE, upgraded to 1 Meg. Even came with a free Gotek.

Now I have yet another system to know ****-all about!

Well, almost three years later, I've finally obtained a case, keyboard and PSU for the motherboard -- just need to find out how much damage the battery did (I neutralised it three years ago, but a couple of the inductors for the mouse port have snapped off) and put it all back together. I also need...

You’re familiar with this, http://www.righto.com/2015/12/reverse-e ... f.html?m=1, I presume?

Many decades ago, I discovered several System 3s. These had been used for lab purposes, and to run an Econet of Atoms.
Amongst them was a disc labelled as being System 3 Fileserver, an image of which is posted here.

viewtopic.php?f=32&t=13380

I've just double-checked on a couple of ACWs, and the model code for the motherboard is the same as for the B+ (0233,000). There are, however, some important differences in how the motherboards are assembled - the ACW has vertically-mounted connectors for the 1MHz bus, user port, etc etc. It also ha...

The ABC/ACW definitely came first, by quite a considerable margin. I’m not aware of any significant differences between the ABC and B+ boards. IIRC the ACW board looks pretty much like a B+ board cobbled into an all-in-one case, just with slightly different writing on it. Functionally, it’s hard to ...

ouch! the price gouging has started for these - they were £109.99 last week, but the only one on Amazon UK today is £227.99 :( Out of stock everywhere else that is listed on 'The C64' website For anyone who wants one, Menkind has started selling them as an online exclusive, and has them in stock fo...

Can’t really comment yet, since I’m a newcomer to Commodore stuff in general. I’ve just acquired the SD2IEC for my real 64 as well, but don’t yet have any games/disc images to try on either machine.
Probably need to get a Pi1541 at some point too.

Leew wrote: ↑

Wed Dec 25, 2019 3:03 pm

A brand new C64...

'The C64' to be exact

Snap. This is a GOOD year!

A great many Pi’s. Well, I am from Wigan, after all!
Except I’m not a true native, so I haven’t put one in a barm yet.

Ps I do know the apostrophe is incorrect, but it looks rude otherwise.

What are you using to hook the C64 up to that display?
I’ve made an s-video lead, but it’s still not brilliant on modern screens.

Uploaded to Archive tonight

Morley 16 Bit SCSI Card ROMs, versions 1.10 and 1.19.

Got a couple - 1.10 and 1.19.
Will upload soon as I get chance (may not be today).

A broken RiscPC case? Surely not! When they launched it, Acorn said it was incredibly tough and made out of the same material as riot shields.

Makes you feel really sorry for mid-90s riot police, if that’s what they were defended by...

Well, in a major break with tradition, the repair not only worked but has done so first time! Isn't that one of the signs of the apocalypse? At first the HD looked like it had died from the shock, but a quick thump of the "it's dead anyway, so what have I got to lose" variety seems to have unstuck i...

Dying hard disk - looks like it’s generating read errors progressively earlier?

That would be S2. Also make sure S9 is made, otherwise it’ll still be looking for a disc interface that may or may not be there (but may have been in the past).

Thanks. I’ve already neutralised the battery gunk with acid and gentle brush scrub, followed by distilled water and ipa. Hopefully all that’s left is residual staining/corrosion that won’t progress. I suspected running wire wrap to the vias was the way to go, and was wondering about doing the same w...

Okay, so all caps removed. A few were a bit ropey and had leaked.
Five pads came off - C19 west, C89 south, C134 both, C65 east. Everything else seems relatively unscathed.

What’s the best way to repair these?

Thanks. I’ll get the caps ordered and report back.

I think I know what the answer's going to be, but I'm going to ask anyway, just in case before I start... A couple of years ago, my A4 was working. I removed the battery before it could leak and soldered a couple of flying leads in its place. When I reassembled it, it no longer worked. So I boxed it...

Is that an otherwise expansion-free Atom? In my case, it appears to work fine (so far as I can tell) with no other expansions fitted - keyboard works etc, and only hangs if AtoMMC is fitted *and* the machine knows about it and tries to use it. Could it be that the W65C02 is more fussy about timings/...

Thanks Dave.
The link options are as I thought. I've tried with both R1 and R2 fitted, and just R1. The result is the same - AtoMMC and the W65C02 just won't play nice together.
I suspect the effort required to get them to do so probably won't be justified by the benefits of succeeding.

Okay, so one "new" crystal later it's working. AtoMMC works fine with either the original 6502 or a spare Model B one. It really hates the W65C02S6TPG-14. Please can someone just clarify the JP4 positions for 6502 vs 65C02? As far as I can tell, the pins aren't labelled, and the various pictures peo...

Now the Atom's died! One minute, it's all working fine. The next, dead as a doornail. I've removed the YARRB and reversed all the changes but still no display and no response to CTRL-G. So I've now got to fix that before doing anything else... Edit: It's not *completely* dead. There's no display wha...

Thanks for the ideas. I've just tried it again, but with the original 6502 rather than the CMOS one. It works absolutely fine - ATOMMC banner and catalogues the card. So it's clearly something the 65C02 is doing that's upsetting things. Please can someone just confirm how all the jumpers should be s...

Okay, a bit of progress... LK3 was made. Now I've unmade it, the machine boots with the AtoMMC hardware fitted and SD card inserted. Hoglet's test program shows it can communicate with the AtoMMC hardware. ?#BFFE=6 makes the machine hang after Break, with just the ATOM banner (no mention of ATOMMC)....

I've finally built mine. It's 95% functional, first time. I'm using a new W65C02S6TPG (CMOIS 6502, up to 14MHz). I've set JP3 North and JP4 West, and made JP5 and 6. 39SF010A has been programmed with the image from diy.acornatom.nl. It starts up fine, I can select BBC Mode without problems. It won't...

It's now not recognising the keyboard that it was quite happy with yesterday. The list of issues is growing, and I suspect it's time to take it down to the bottom of the garden and shoot it. :( I'd still dearly love to know why there's a difference between RO3.5 and later variants in terms of colours.