Mike's PCjr Page

For Ethernet I'd love to see something in the modem slot. It has an interrupt line. It has I/O ports. Putting wired Ethernet in there should be easy. Additionally, no case modifications would be necessary, since the window is wide enough for an RJ11 and will probably take an RJ45 just fine. You are...

Nevermind, I found it in PCjr Technical Reference book: http://www.brutman.com/forums/download/file.php?mode=view&id=122 A1 - D7 B1 - 5V A2 - D6 B2 - /MODEM CS A3 - D5 B3 - A9 A4 - GND B4 - /TXRES A5 - D4 B5 - GND A6 - D3 B6 - A2 A7 - D2 B7 - A1 A8 - GND B8 - A0 A9 - D1 B9 - GND A10 - D0 B10 - /...

Does somebody have signal description/diagrams for modem slot?...

I don't think there is any documentation on MegaLZ - it was written by hackers from deep russian woods :) P.S. There is a Russian description of the format itself (autotranslated by Google): https://translate.google.com/translate?sl=ru&tl=en&js=y&prev=_t&hl=en&ie=UTF-8&u=http...

Yep, seems very comparable to ZX7. ZX7 uses elias gamma coding for its order-0 phase; MegaLZ uses something it made up itself (looks like 2-pass statistical method?). Authors stated that MegaLZ compression utility uses guaranteed optimal way to encode biggest possible patterns - something like that...

I would not have guessed that would work due to protocol differences. I guess it uses the Microsoft Mouse protocol standard? Yes, I used this mouse as "a Microsoft mouse" 13 years ago in one Russian high-end ZX-Spectrum clone called "Sprinter" ;) Surprisingly everything pictured...

Russian demosceners use MegaLZ, so I may try it instead ;) LZ4 and ZX7 max out their respective pareto frontiers. I co-wrote the x86 decompressors for both, so I'm biased, but they are the fastest 8086 decompressors for their formats, and both have optimal parsing built into the compressors so they...

I just burned ColorPaint into my cartridge clone and run it from DOS: http://www.brutman.com/forums/download/file.php?mode=view&id=113 Without mouse it's useless, but at least it's working ;) So in order to run it you need DOS - at least bootable disk - for example "Your PCjr Sampler"...

ok, thanks! I'll check

P.S. ZX7 is when ZX-Spectrum and PC worlds collide?
BTW ZX-Spectrum (and his clones) is my another obsession

Russian demosceners use MegaLZ, so I may try it instead ;) About MOVSB - I thought about it, but problem is I need to check that copied value is 0, so I must keep it somehow - that's why copy through AL About LOOP - I completely forgot about it (my 8086 experience ended around 1994 when I switched t...