Paula MaddoxJul 20, 2025

#PC104 #Transputer woes...
It seems I can write a value to the TRAM (a T425 based one) but when I try to read it back I get rubbish :(

This is my writing 0xAA55AA55 to address 0x8000FF00 (this is a valid address)

but when I read it back, I just get 0x10101010

Show threadjohnc
@PaulaMaddox that used to be the pattern RAM was initialised to (on PC not Transputer, but I think it was a common thing after memory tests) so that sounds like the write has failed to my unqualified brain.
Jul 21, 2025 at 9:17amWeb
Show threadPaula MaddoxJul 21, 2025
@johnsculpture thanks.
I’m zeroing in on the whole pile of problems being a timing issue.
Knowing this helps, thank you.