Page 3 of 3

Re: PSX Blaster (USB Comms Link)

Posted: December 20th, 2019, 9:14 pm
by Dedok179
szalay_1 wrote: December 19th, 2019, 6:30 am Getting starting..
001.jpg
002.jpg
003.jpg
It's great that you are still recreating this project. It will be very interesting to know the results of all these works.

Re: PSX Blaster (USB Comms Link)

Posted: January 8th, 2020, 12:59 am
by Shadow
Are you writing the code for it? The schematic needed to be updated too so I hope you know what you're doing with it otherwise you're wasting time/money :?

Re: PSX Blaster (USB Comms Link)

Posted: January 16th, 2020, 1:16 am
by szalay_1
"It was worth a try once no ?"
I did it once.. and it won't work with regular XP/PAR.rom
"you're wasting time/money"
Probably yes, but we now know it doesn't work..
Like you said..Except if :
"It needs a lot of programming to get it to work as intended"

Re: PSX Blaster (USB Comms Link)

Posted: March 12th, 2024, 8:28 pm
by Orion_
I can confirm that the PSX Blaster design doesn't work.
I simulated the logic in a software and it is wrong, RD_USB goes low require AD17 AND !AD17, which is impossible.
Also, the logic voltage are mixed up, some logic chip have 5V, some other 3.5V, and the USB chip receive 5V logic on its pin where VCCIO is tied up to 3.5V.
I made the board and apart from the ROM booting (I used n00brom for testing), the USB chip is not recognized and the logic signal are bad (can't make RD_USB low at all)
I'm planing on making a new working cartridge for dev (like an xplorer cart but using USB)
Image