Video image generator superimposition for analog PAL signals, with Atmega328, for your retro OSD titles https://retrofficina.glgprograms.it/

giomba 02a19ef783 fixed horizontal offset error ... Basically, the LPM instruction (3 cycles) does not always take 3 cycles, (I think because of the timing needed to read the Flash memory), and this disrupts the timing of the signal, leading to some offsets depending on what is shown on the line. Thus, the LPM instruction has been replaced with an RJMP one, which, instead, always takes 3 perfect cycles to be performed, timing is not disrupted anymore, and image appears ok.		2021-08-11 11:24:41 +02:00
.gitignore	first commit	2021-06-26 19:15:17 +02:00
Makefile	generates an hardwired test pattern	2021-08-11 09:04:59 +02:00
const.h	line buffer dynamic update	2021-07-03 15:44:01 +02:00
frame.S	fixed horizontal offset error	2021-08-11 11:24:41 +02:00
frame.cpp	fixed horizontal offset error	2021-08-11 11:24:41 +02:00
macro.h	first commit	2021-06-26 19:15:17 +02:00
main.S	generates an hardwired test pattern	2021-08-11 09:04:59 +02:00
main.c	hardwired jump table	2021-08-10 09:26:51 +02:00