Tandy 1000RSX

[falter]

Picked up a Tandy 1000RSX for $150, which I think was decent given how rare they are. However I noticed it doesn't have any RAM installed in the two SIMM sockets. Is the original 1MB soldered on the board? I can't tell in photos but it looks like there may be two large RAM chips soldered beside the sockets.

 

[bolex]

This site says that there is 1MB onboard.

 

[falter]

Yeah I was trying to find it on the board.. but looking up the part numbers for the chips nearest the SIMM sockets, it shows they are 256x4 VRAM.. I don't see anything else on board that totals 1MB.

Just got me wondering if the RAM in mine was removed and should be in the SIMM sockets, or if it's in a form onboard I don't recognize.

 

[MikeModifed]

https://web.archive.org/web/20141129194124/http://support.radioshack.com/productinfo/DocumentResults.asp?sku_id=25-1454&Name=Tandy Desktops&Reuse=N <shrug>

Mike

 

[Cloudschatze]

... looking up the part numbers for the chips nearest the SIMM sockets, it shows they are 256x4 ...

What part number are you seeing? Those should be 256K x 16 chips.

Have fun with the RSX. It's a great system.

 

[falter]

Ah! Got it... yes first time I goiogled the KM416C256J one site had it as 256x4 video RAM. But another search has x16. Thank you. Just wanted to make sure I didn't need to find RAM for it.

Looking forward to messing around with this.. assuming it doesn't do what half my later version 1000s do which is blow caps.