Memory system update

Memory system update
My memory system has recently undergone an update to hardware design. Originally I planned and implemented four memory bank registers – two for lower and upper 32kB of code, and two for lower and upper 32kB of data (see this post for details). With hardware able to address maximum of 128 banks via 22-bit address ...

EPROM emulator hacked and working

EPROM emulator hacked and working
The EPROM emulator I mentioned in my last post now works with the memory board. Making it work was an easy task and required a few simple hacks in hardware and software. Now I have a convenient and reliable development environment based on real hardware, and free of the hassle of EEPROM programming. I know ...