[KERNAL] kbd_leds extapi (#220)

* [KERNAL] kbd_leds extapi

* minor fixes

* fix typo

KERNAL: minor edit system reset example (#184)

Fixed comments in example (just tested this in my code, and comments are now consistent with behavior)

[PRG] changes to TL866-3G VERA upgrade doc (#95)

* [PRG] changes to TL866-3G VERA upgrade doc

* typo

[PRG] document BASIC EXEC command (#78)

VERA: fifo loop (#56)

[PRG] minor rewording (#41)

[PRG] update BASIC commands, fix copy/paste error (#13)

* [PRG] update BASIC commands, fix copy/paste error

* VGA on X16 runs at 59.5, not 59.95