tomicdesu

Ouch -- scrolling busies the machine for 26 mS. Have you given any further effort on this solution? I haven't yet looked at the code to see how scrolling is done. If it's interruptible it should be OK with slow scroll.

FWIW, dropped the library into my new board, with the resistor tree using 180/390 ohms, into a 7 inch VGA monitor from AliExpress, the library from Github, and it umm worked first time. That's not right but I'll take it! 640x480 and 800x600 work...

Oh my. I put my USB2 into a USB-C jack, it was meant for keyboard only but will test it and see what else I need to do for USB3. I will look at that device! Thanks!

Well the target is an emulated Z80, so resources are (artificially) tight. And, lol, somewhat moot, as the board is at JLCPCB. But I assume there will be revisions. I'm doing the VGA work on the Teensy "side" of the emulation, not in the Z80...

OK cool. I figured as much (and I know that millis() has long been a fiction) but there's a lot to assimilate in the Teensy system, I'm laying out a prototype board and thought I'd make sure. I truly appreciate the replies!

OK thanks! I had been looking for "T14" on the pinout card... and I figured as much re: system timers, but thought a dumb question was best.

This is all amazing work, thanks, especially jmarsh and wwatson. I'm about to breadboard this, but I'm confused by the pin nomenclature. I'm new to Teensy 4.1, though a reasonably experienced programmer. I'm trying to map "T14-10" (11, 12) to the...