Neil are you sure you have the windows on the z80 board set correctly. From the monitor flip 64k+ into RAM at 0H and check it out by substituting bytes, then flip it back and forth with 0H RAM and check all ok.
Sent from my iPad
On Jun 29, 2014, at 9:19 PM, nbreeden <nbre...@me.com> wrote:
I was trying to run BASIC with no luck. As the system boots and some of the smaller programs run (PIP as an example) I know the core system is running. It may be too small a TPA causing BASIC to hang.--
I haven't been able to get banked mode CPM to boot; I'm still trying to isolate the issue; items I need to look at:
* Jumper setting on my 4Meg SRAM card.
* Test the RAM on the 4Meg SRAM card.
When banked mode CPM stops loading the system is left looping between addresses 0x010021 to 0x010091; there is most likely a hint in this.
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