exxos's Atari, Amiga & retro forum

Nice progress !

So once you get the RAM your build is complete, isn't it ?

HigashiJun wrote: 17 Jan 2024 08:20 Nice progress !

So once you get the RAM your build is complete, isn't it ?

Not quite, I'm waiting on about half the logic ICs, but they are all in the post and should be here by the weekend at the latest. I have enough RAM to do some basic tests though :)

Getting very excited to get it running even if it needs some fault finding.

I'm going to work through the tests in the assembly instructions before I fully power on, but so far it's looking promising.

rubber_jonnie wrote: 17 Jan 2024 08:44 Not quite, I'm waiting on about half the logic ICs, but they are all in the post and should be here by the weekend at the latest. I have enough RAM to do some basic tests though :)

Getting very excited to get it running even if it needs some fault finding.

I'm going to work through the tests in the assembly instructions before I fully power on, but so far it's looking promising.

Ok, so still some steps to have a fully fledged OSI.

At least, so far so good.

8-)

HigashiJun wrote: 17 Jan 2024 09:21

rubber_jonnie wrote: 17 Jan 2024 08:44 Not quite, I'm waiting on about half the logic ICs, but they are all in the post and should be here by the weekend at the latest. I have enough RAM to do some basic tests though :)

Getting very excited to get it running even if it needs some fault finding.

I'm going to work through the tests in the assembly instructions before I fully power on, but so far it's looking promising.

Ok, so still some steps to have a fully fledged OSI.

At least, so far so good.

8-)

Yeah, but it'll just be fitting the ICs into sockets as and when they arrive :)

Well more parts arrived, I will figure out what's what later and get them fitted:

Not quite enough there to populate the board.

It's almost like a jigsaw now isn't it? ;-)

stephen_usher wrote: 17 Jan 2024 13:51 Not quite enough there to populate the board.

It's almost like a jigsaw now isn't it? ;-)

No, not quite :(

I'm just hoping none of the pieces have fallen under the sofa...

rubber_jonnie wrote: 17 Jan 2024 14:10 No, not quite :(

I'm just hoping none of the pieces have fallen under the sofa...

Don't let your cat find them before you...

:lol:

HigashiJun wrote: 18 Jan 2024 07:19

rubber_jonnie wrote: 17 Jan 2024 14:10 No, not quite :(

I'm just hoping none of the pieces have fallen under the sofa...

Don't let your cat find them before you...

:lol:

I'm keeping him well away from it!

And aside from the rest of the RAM and one IC that isn't in yet but not important, it's complete:


The only thing I'd missed was a resistor for the LED (Damn BoM again) and having fixed that I now get a power light.

Only trouble is, it doesn't power up, so I'm looking at the service manual, as it has some oddities I'm told that you need to do before troubleshooting. I can say that 5v does appear to be everywhere it should be, and I don't see a clock at the CPU.

Hey ho, all the fun of the repro retro build :)