this piece of code has no wait-uart-rx-till-ready ready, is it right ?
is it blocking by hardware ? it looks uncommon to me

danhans42 wrote:Hi,
SIO channel used for the memory cards and controllers?

SIO means "Serial IO" -> uart (asynchronous)
you probably mean "PAD" channel, which is similar to SPI (synchronous)

and your idea is a good idea!

hi guys any asm source around to toy with the psOne & playstation1 SIO-uart port which does not use the BIOS at all ? I mean something that access directly the SIO registers. I am planning to remove the psx's bios replacing the firmware with a bareboard piece of code, so the SIO will be my std-IO fo...

i am planning to replace the PSone's bios with a NVram @ 3.3V
also i am planning to do the same on an old playstation1.

i'd like to replace the firmware, too, with something extremely easy and essential, just to toy with the uart.

hi
does anybody has the Sony Playstation1's bios pinout ?