Circuit use SST29EE010 Memory

Hi,
Is there anything special needed to do from a hardware angle to use
SST29EE010 Memory chips on a small 68000 system that I am building. In
the past I have been using 27C512 ROMs for my program and I have had to
reprogram the ROMs every time a found a bug or add a new hardware
module. I have now got a comms port up and running and I would like to
change the ROMs so the the system can reprogram is self on the fly.
This will reduce the development time and increase the protental of my
project. Is it a case of hooking up the address, data chip selects,
read and write lines to the processor and then it is ready to use. Am I
correct in that all I then need to do is write three bytes of data to
the correct address followed by the data that I wish to program.
Thanks for any details that can be given.
Kenneth Keeley

 

[Paul Burke]

kenkeeley@hotmail.com wrote:

Hi,
Is there anything special needed to do from a hardware angle to use
SST29EE010 Memory chips on a small 68000 system that I am building. In
the past I have been using 27C512 ROMs for my program and I have had to
reprogram the ROMs every time a found a bug or add a new hardware
module. I have now got a comms port up and running and I would like to
change the ROMs so the the system can reprogram is self on the fly.

You are writing a boot loader. Don't forget that the program for the
boot loader mustn't get erased when you erase the flash, so either keep
that bit of the program in a separate EPROM, or don't do 'erase all'.
Other than that, if the timings are right (and they probably are if it
worked with EPROM), there's only the slightly different pinout to
remember- it looks more like RAM than EPROM IIRC.

Paul Burke