Archive for the ‘SNES’ Category

Gradius III SA1 mod working on PAL SNES

Mittwoch, Juni 26th, 2019

thanks to Vitor Vilea for the great Gradius III  port with use of the SA1 Chip.:-)
No its time to make it real. As I done SA1 mods before with a 3,3V Flash chip I used this way

you need:

1x AMS1117 3.3V voltage Regulator Low Drop SOT-223

1x 100nF kerko (yellow)

1x MX29L3211 Flash

1x AS6C1008-55SIN RAM (1M)

I patched the japanese Rom and duplicated it 8 times (not sure if needed).

copy /b g3jpsa1.bin + g3jpsa1.bin + g3jpsa1.bin + g3jpsa1.bin + g3jpsa1.bin + g3jpsa1.bin + g3jpsa1.bin + g3jpsa1.bin + g3jpsa1.bin 8g3jpsa1.bin

use Voltage Regulator with kerko and wire 3,3V to the 3 detached Pins of (33,23,1) MX29L3211

sa1grad3

Remove original RAM and free the soldepads from green coat and place in AS6C1008-55SIN

u2 sram

and ready to go without any slowdowns….

optional RegionFix SA1 Cart working on PAL SNES

Lift Pin 127 (5V floating) of U3 SA1 for 50Hz PAL SNES (regionfix)

 

You can use a 28F1610 instead of the MX29L3211 3,3V Flash

29F1610

Here you have only to lift pin1 and set pin 1 directly to 5V

 

Recap 2-Chip SNES SNESP-CPU-02

Mittwoch, September 7th, 2016

Here we go with CAP List for a  SNESP-CPU-02

2_Chip_recap

Digital Audio Out @ 2 Chip SNES with S-DSP

Montag, August 29th, 2016

crystal clear sound :-))

digi_2_chip

IMG_9776

IMG_9777

IMG_9772

Recap SNES 1 Chip

Montag, August 29th, 2016

Recap of SNES is needed too, during age of Elkos :-)

1chiprecap