STE DUALTOS UBE 1.62 & 206 - Not Booting, white screen

[exxos]

0048, 0139, 0162 boards are for the STE.

Other boards are for STFM or MEGA ST. The note is there because you can't drop a TOS206 ROM into a STFM without a TOS206 ROM decoder which the V2 booster has.

STE DUAL TOS ROMs use 1.62, 2.06
STFM DUALTOS use TOS 1.02, 1.04
STFM DUALTOS WITH V2 BOOSTER can use any ROM, but generally 1.04,2.06 (but 1.02,1.04 is still fine)

The "32MHZ FAST TOS" is just the label, it is confusing people.. it just means it CAN run at 32MHZ if a booster is used, which then makes it "FAST TOS". I did this because people sometimes burn their own ROMs and if they use a slower chip and try to use it with the booster, it won't work. This is why I put 32MHz on the sticker to "prove" they can also run at that speed. In terms of a stock STE, it makes no odds whatsoever.

[dandoore]

Ah, cool - thanks for the clarification :)

[dandoore]

Well your welcome to send the ROM board back for a retest but problems like this tend to need diagnosing on your ste. I only know @Steve doing such services currently.

I think I'm going to have to do this as I've no replaced the sockets as well and no difference so I don't have many more avenues to go down:-(

Can you PM me the details for returns please.

[derkom]

There is a 'but' though. My PLCC to 40 pin DIP adapter was incorrectly wired, so I had to fix that before it would work. May be worth a try.

"It appears that on my PLCC44-DIP40 adapter pins are perfect match except... NC and GND which are simply switched/reversed... So I dd a simple "patch" (simply bridging pins 12/13 and 33/34" [on the PLCC socket]"

Thank you for this! Just ran into the same issue myself. My solution...

plcc44-dip40.jpg

:mrgreen:

[rubber_jonnie]

There is a 'but' though. My PLCC to 40 pin DIP adapter was incorrectly wired, so I had to fix that before it would work. May be worth a try.

"It appears that on my PLCC44-DIP40 adapter pins are perfect match except... NC and GND which are simply switched/reversed... So I dd a simple "patch" (simply bridging pins 12/13 and 33/34" [on the PLCC socket]"

Thank you for this! Just ran into the same issue myself. My solution...


plcc44-dip40.jpg


:mrgreen:

Cool :)