Issue Burning ST-V Multi BIOS

[RealMFnG]

I am using a Top3000 programmer. My ST-V board has a mask ROM for the BIOS, not an EPROM. Therefore, I am burning the multi bios on a MX27C4100 EPROM. I am getting the following error during verify:

Error at:0000FF)

Any special setting I must burn the EPROM at to do this correctly? I have two MX27C4100 EPROM's. Attempting to burn the multi BIOS on either gives me the same error.

 

[K405]

Posting a screenshot of the settings you are currently using will help troubleshoot.

 

[RealMFnG]

Here are the settings (default) after loading the BIN.



And here are the overall settings (also default)

 

[skate323k137]

I also have a top programmer, when I burn STV multi's with it I use AM27c400 chips but set it to mx27c4100 chip (the only equivalent that this burner supports afaik).

I've found these chips to have a very high failure rate compared with other EPROMs. You're probably not doing anything wrong. Try doing a "read" rather than just verify and see how the buffer looks. If it's all fucked up but some of the bytes match you probably just have bad blanks.

 

[RealMFnG]

Yeah, Top software is pretty inconsistent in terms of compatibility. It is weird in that when I install it on one PC, I get some features like SEARCH. But when I install the same version on another PC with the same OS (Win7 64-bit), I am missing the SEARCH function. I am forced to navigate through the manufactuer listing to find my chip.

Well, the write process is successful. So to satisfy curiousity, I put the EPROM in the ST-V to see if it works. It doesn't. The read works. Nothing unusual. Weird that I bought two blanks and have the same issue on both. I'll await more feedback before taking a dive with the AM's you mentioned.

 

[bagheera369]

what speed version of the eprom are you using, if I may ask...need to burn one for myself.

 

[RealMFnG]

I also have a top programmer, when I burn STV multi's with it I use AM27c400 chips but set it to mx27c4100 chip (the only equivalent that this burner supports afaik).

I've found these chips to have a very high failure rate compared with other EPROMs. You're probably not doing anything wrong. Try doing a "read" rather than just verify and see how the buffer looks. If it's all fucked up but some of the bytes match you probably just have bad blanks.

I switched to the AM27C400 chips and was able to successfully burn the multi bios. Tossing the MX27C4100 in the garbage.

what speed version of the eprom are you using, if I may ask...need to burn one for myself.

I bought these. Dunno what the speed are on these. They are confirmed working though.

 

[bagheera369]

Wound up just ordering one from Mitsurugi