Re: [N8VEM-S100:4163] Multiple Rom Monitors and a conflict

Hi John, Thomas,

Could this be the problem:

from S100computers.com:

"Note if you decide to use a EEPROM such as a Samsung MK28C64A 8KX8, you have to place it at an 8 K boundary. So in high RAM this would be at E000H. If you want to use E000H-FFFFH for your monitor then that's fine."

Rick Bromagem

From: John Monahan <mo...@vitasoft.org>
To: n8vem...@googlegroups.com
Sent: Friday, June 13, 2014 2:58 PM
Subject: RE: [N8VEM-S100:4163] Multiple Rom Monitors and a conflict

Dave has become the de facto IDE board guy so I’ll let him answer, but where are your disk RAM buffer variables etc. stored. The Z80 monitor will try and find the top of RAM for the stack. It always puts out a “#” character as the very first thing it does to indicate it’s alive. Without a description of exactly what you mean by “but not together” it’s not possible to really help.

Please describe symptoms in detail.

John

From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of Thomas Owen
Sent: Friday, June 13, 2014 2:42 PM
To: n8vem...@googlegroups.com
Subject: [N8VEM-S100:4163] Multiple Rom Monitors and a conflict

Hello Everyone,

I have a problem I hope someone can answer as I am just not sure where to start.

I have a copy of Master Z80 in Rom that resides at F000. I also have a version of MYIDEROM that was put together by David Fry to allow boot from the IDE CF 'no holes' version. This rom is at E000.

Now, both roms will function just fine in the system by themselves, but not together and I don't know why. I think it has to do with a common stack or other common area, and I can certainly change the code in one or the other to make it work.

Does anyone know right off why this is happening? Which code would you change and why?

Thanks for all the help.

Thomas

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