OSI 600D Superboard Build

[HigashiJun]

Nice progress !

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

[rubber_jonnie]

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.

[HigashiJun]

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.

[rubber_jonnie]

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.

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

[rubber_jonnie]

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

PXL_20240117_110329133.jpg (250.23 KiB) Viewed 910 times

[stephen_usher]

Not quite enough there to populate the board.

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

[rubber_jonnie]

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...

[HigashiJun]

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...

[rubber_jonnie]

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...

I'm keeping him well away from it!

[rubber_jonnie]

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

PXL_20240118_155652266.jpg (382.17 KiB) Viewed 813 times

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