I had a stash of Fujitsu MBM27C1000A 1mbit UV EPROMs I purchased a while ago and found that my TL866II programmer did not have listed. Rather than throw them away as no one wanted to buy them from me, I held onto them.
I decided that I wanted to try using these in my STE instead of the usual 27C010 chips so that I would not need to change the W102, W103 and W104 jumpers when they were set for 28 pin TOS ROMs.
I have therefore created an adapter board that maps the 27C1000 to 27C010 which has allowed me to then program them as 27C010 in my programmer.
I made up one of the PCBs and it worked. 2 x 27C1000 chips programmed with TOS 2.06 (HI/LO) and inserted into one of my STEs which previously had v1.62 28 pin mask ROMs. I have also loaded EmuTOS 0.9.12 into a couple of the 27C1000 chips and this also works fine in the STE.
Blogs & guides and tales of woo by forum members.