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Re: OSI 600D Superboard Build

Posted: 22 Jan 2024 09:04
by rubber_jonnie
Well, the rest of the RAM is at my local depot ready for delivery today, I can only hope that the 74LS93 arrives today too, otherwise no amount of RAM will have it booting!!

Re: OSI 600D Superboard Build

Posted: 22 Jan 2024 09:14
by stephen_usher
:crossed1:

Re: OSI 600D Superboard Build

Posted: 22 Jan 2024 11:22
by rubber_jonnie
Dammit. 20 RAM ICs in the post, but no LS93...

Though the shift lock 'bodge' switch arrived and looks happy in it's new home:

PXL_20240122_111549247.jpg

The problem is that actual latching shift lock keys are pretty expensive and Klyball over at OSIWeb, who changed the switches on the PCB, added this a workaround. If I can get the correct switch, it'll be going in.

Re: OSI 600D Superboard Build

Posted: 23 Jan 2024 11:57
by HigashiJun
Are the resistors going under the SHIFT key ?

Re: OSI 600D Superboard Build

Posted: 23 Jan 2024 12:00
by rubber_jonnie
HigashiJun wrote: 23 Jan 2024 11:57 Are the resistors going under the SHIFT key ?
They are, but they are no taller than the switch body so don't interfere.

Re: OSI 600D Superboard Build

Posted: 23 Jan 2024 12:06
by HigashiJun
rubber_jonnie wrote: 23 Jan 2024 12:00 They are, but they are no taller than the switch body so don't interfere.
Quite odd design, but at least they don't interfere.

Re: OSI 600D Superboard Build

Posted: 23 Jan 2024 12:57
by rubber_jonnie
HigashiJun wrote: 23 Jan 2024 12:06
rubber_jonnie wrote: 23 Jan 2024 12:00 They are, but they are no taller than the switch body so don't interfere.
Quite odd design, but at least they don't interfere.
Yeah, you'd think they'd be flush like the diodes, but for some reason they aren't.

Here it is close up with the key up:

PXL_20240123_125012175.jpg

And down:

PXL_20240123_125015013.jpg

So there is plenty of space overall. Annoyingly I ordered some 1/2W resistors rather than 1/4 for that 4th one along, and I may replace it later, but it's well away from the keycap, but I expect it's tall enough to interfere if it was in one of the spots.

Re: OSI 600D Superboard Build

Posted: 23 Jan 2024 13:05
by HigashiJun
rubber_jonnie wrote: 23 Jan 2024 12:57 So there is plenty of space overall. Annoyingly I ordered some 1/2W resistors rather than 1/4 for that 4th one along, and I may replace it later, but it's well away from the keycap, but I expect it's tall enough to interfere if it was in one of the spots.
I would replace it too, for the sake of aesthetics...

:lol:

Re: OSI 600D Superboard Build

Posted: 23 Jan 2024 13:15
by rubber_jonnie
HigashiJun wrote: 23 Jan 2024 13:05
rubber_jonnie wrote: 23 Jan 2024 12:57 So there is plenty of space overall. Annoyingly I ordered some 1/2W resistors rather than 1/4 for that 4th one along, and I may replace it later, but it's well away from the keycap, but I expect it's tall enough to interfere if it was in one of the spots.
I would replace it too, for the sake of aesthetics...

:lol:
:lol: :lol: :lol:

Re: OSI 600D Superboard Build

Posted: 23 Jan 2024 13:15
by PhilC
what about using some SMD resistors?