*** M E M O R U M ***

I don;t know whether it is relevant to MAME, but for MEMU, in order for the tape reading to work, I had to do some work on the Z80 emulation to make the CTC interrupt to the Z80 nearly cycle accurate. In that case the Z80 could be issue, it is known to not be cycle accurate and I believe someone el...

The WAV file loading and saving works in exactly the same way as the real hardware, with audio edges clocking the emulated CTC, and pulses output on port 0x03. Thanks for the info. I was hoping the MAME issue was something simple like only clocking the CTC on edges, but this was already in there. I...

Bill B wrote:As those who were at Memofest 2016 know, I have created a version of Andy's MEMU that can load games from audio WAV files.

Is the source for this version available anywhere? I'd like to take a look to help get tape loading working in MAME.

I'm kinda struggling with the FDX, here's my current logging: [:exp:fdx:fdc] cmd: seek 1 0 (track=0) [:] bankswitch 00 [:] bankswitch 01 [:] bankswitch 20 [:] bankswitch 30 [:] bankswitch 40 [:] bankswitch 50 [:] bankswitch 00 [:] bankswitch 80 [:exp:fdx] drive control 00 [:exp:fdx:fdc] cmd: seek 3 ...

Thanks, appreciate the help. I couldn't even sign up to the Dragon forums, and no forum exists for the Camputers Lynx so here we are

As far as I know I'm using a proper dump from the 80 column character ROM and noticed the @ is different from photos and MEMU.

The Hardware drivers are then copied into high memory at &EC00 with a block move The start-up code is entered at &EC01 The FDX ROM was being paged out between these two steps so never jumped to &EC01. Fixed this and I now have the initial bootstrap screen. My 80 column implementation is...

The MTX machines have been in MAME (MESS) for a number of years and were marked as working. I recently tried the MTX512 and found the emulation was actually very preliminary, ie. the machine started and entered BASIC but you couldn't do much else. I'm more familiar with the Acorn BBC range of machin...