I don't have the sophistication/knowledge of may folks here, but at least for me, getting an initial system working was a challenge.
I was able to make use of an ADC Super Six board to test out the ram and serial port boards.
Some thoughts...
Jumpering and wiring connectors on the Console I/O board can be tricky.
Remember that the V5.02 monitor is going to read an IOBYTE at 0EFH, which isn't present in your current system. It also needs to be assembled twice for high and low page versions and then combined to burn the Eprom. I also believe jumpering for 2764 and 28C64's are different, but would have to check...
Take a reasonable resolution pic of each board and post them, We can compare jumpering etc or may spot errors.
I'd be happy to burn you a working 28C64 with V5.02
At least for me, almost every problem ended up being incorrect jumpering, pins that weren't in the socket properly, need to resolder ground connections, or flakey/bad/counterfeit IC's.
- Gary
On Wednesday, June 10, 2015 at 10:41:45 PM UTC-4, hl...@aol.com wrote:
Hi everyone. I just finished building the Z80 board and I am having some problems, so I am hoping that some of you have some ideas.
My system is the following:
V2-S100 Z80 Master CPU board
4Meg static RAM board
Prop I/O board
I have the Z80 board jumpered as master. I also have a simple switch for reset. The RAM board is set for 1Meg only at 0000H.