Recent content by etxmato

Hmm, looking at the picture NeXT posted with the small color TV it looks like the screen is showing inverted characters. That could indicate that the 0x01 on 0xD8FC, if used for MC6847 functions, has bit 0 connected to the INV. Like first attached screenshot below. Then bit 7 of the character...

I looked a bit more at the tape routines and the OUT 1. It looks like the 0x53 is the L key (LOAD) and 0x4C the S (SAVE), why that would be send to the OUT 1 I don't understand. It is also done just before 'NAME?' is printed and after the first character is received from the keyboard the OUT 1...

With some shortcuts I got load/save running very quickly... the ROM is using the 'standard' 1802 save option with Q/EF for save/load. There are some things that I don't understand: 1. At start of SAVE an OUT 1 with 0x53 is done followed by two OUT 1s with 0. Same on LOAD but then the first OUT...

I don’t necessarily need the real HW but would need specs or schematics to make it ‘complete’. Of all the machines that I currently have emulated in Emma 02 I only have real HW for 2 of them (COMX and VIP2K). I don’t claim they are all perfect or fault free 🤪. For the Macbug, I already made...

Very interesting :) I managed to add some emulation for this DIY machine via my new XML (beta) feature in Emma 02. Video and keyboard are working; will try the load/save tomorrow.