14 Dec
2016
14 Dec
'16
11:12 p.m.
On Wed, Dec 14, 2016 at 2:08 AM, Alexis Kotlowy
<thrashbarg at kaput.homeunix.org> wrote:
On 14/12/2016 09:19, Ethan Dicks wrote:
Thanks for the tip, Alexis. It did run under ZEMU under Wine on my
Mint laptop, but what an awful interface. My next goal is finding
something less mousy like fixing altairz80.
So far, this loop hangs on all three emulators
I've tried - simh's
altairz80, simcpm010 for AmigaDOS, and EMUZ80 for Raspberry Pi...
Have you tried running it on ZEMU? (Windows only unfortunately, but
should run under WINE).
http://www.z80.info/z80emu.htm#EMU_CPU_W32 I tried single stepping through it just now and it
looks like it's doing
its job, at least as a possible random number generator.
Yep. No tweaks. It just ran as expected under ZEMU once I got the
files in there.
I can't find any information on what the MSB is
set to when the
accumulator is loaded with R, and what the Sign flag is set to. The
datasheet says the Sign and Zero flags are changed by the instruction.
If either of these flags are set, the routine enters an infinite loop.
The upper bit of R can be set or cleared with LD R,A but won't change
state due to counter activity. I checked the program - it only does
LD A,R to read the register. It never sets it.
Thanks again for the tip. Once I get a few more things checked out,
I'll be revealing what this is all about. I think a few people may be
interested, or at least amused.
-ethan