RC 2014 z80ctrl: AVR-based Z80 Bootloader and I/O Board https://youtube.com/watch?v=_iZxZO_yfaE rc2014 video output progress' The chips used from left to right on the breadboard, a 74ls30 and 3 74lvc245 https://youtube.com/watch?v=UdHl2geRWks success rc2014 video card https://youtube.com/watch?v=Ptgco7tEjoo A working(!) VGA character display for the rc2014, the 640x480 is scan doubled with alternate lines dimmed for a nice retro interlaced effect, you can poke an ascii value into the top 1KB (actually 1000 characters) and it will appear on the screen the characters are 8x8 (but stretched to 16x16) giving 40x25 characters rc2014 shocking news machine code faster than basic! https://youtube.com/watch?v=P49wBkKIJks Playing with my new "video card" on my rc2014 I noticed that basic (the language) was very very slow at changing the screen contents. first you see basic setting the whole screen with characters 0-9, then a machine code routine does the same but with the whole character set space(32) to smiley(127).... RC2014 Z80 8-bit computer kit + SN76489 sound chip test https://youtube.com/watch?v=UgWNzCyP7hc Z80 Retrocomputing 14 - RC2014 Floppy Controller Board https://youtube.com/watch?v=01FP3vsBzvI Z80 Retrocomputing 10 - RC2014 CompactFlash https://youtube.com/watch?v=xf9N5K1EPfI