PS1 bios problems

General information to do with the PlayStation 1 Hardware. Including modchips, pinouts, rare or obscure development equipment, etc.
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cinderglacius
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PS1 bios problems

Post by cinderglacius » September 28th, 2020, 11:33 am

Hello friends.
Currently I bought a PS1 region Japanese model SCPH5000 and I read that to play ntsc u / c games you had to replace the bios.
Today I received my 29f040b chips and proceeded to burn the original SCPH-7001 US bios. on the ps1 SCPH-5000 J
I already installed it on the motherboard and the bios is already in English but there is a problem, the ps1 seems to be still in the Japanese region because it only reads Japanese discs and not American ones.
What's up, does anyone know what is going on? :(

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Shadow
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Post by Shadow » October 12th, 2020, 12:53 pm

The HC05 will still be locked to Japan. You'll need a modchip.
Development Console: SCPH-5502 with 8MB RAM, MM3 Modchip, PAL 60 Colour Modification (for NTSC), PSIO Switch Board, DB-9 breakout headers for both RGB and Serial output and an Xplorer with CAETLA 0.34.

PlayStation Development PC: Windows 98 SE, Pentium 3 at 400MHz, 128MB SDRAM, DTL-H2000, DTL-H2010, DTL-H201A, DTL-S2020 (with 4GB SCSI-2 HDD), 21" Sony G420, CD-R burner, 3.25" and 5.25" Floppy Diskette Drives, ZIP 100 Diskette Drive and an IBM Model M keyboard.

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Post by inellduff » October 28th, 2020, 12:40 pm

Thanks for the information. It really helped me!

cinderglacius
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Post by cinderglacius » February 19th, 2022, 10:54 am

Shadow wrote: October 12th, 2020, 12:53 pm The HC05 will still be locked to Japan. You'll need a modchip.
I would like to know where the HC-05 is located. I have an other american donor ps1 for parts.
I could get the part I need from him.

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Post by Shadow » February 19th, 2022, 5:36 pm

Usually it's the non 80 pin model (since the 80 pin one is rare).
Image

It's this chip right here
Image
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Development Console: SCPH-5502 with 8MB RAM, MM3 Modchip, PAL 60 Colour Modification (for NTSC), PSIO Switch Board, DB-9 breakout headers for both RGB and Serial output and an Xplorer with CAETLA 0.34.

PlayStation Development PC: Windows 98 SE, Pentium 3 at 400MHz, 128MB SDRAM, DTL-H2000, DTL-H2010, DTL-H201A, DTL-S2020 (with 4GB SCSI-2 HDD), 21" Sony G420, CD-R burner, 3.25" and 5.25" Floppy Diskette Drives, ZIP 100 Diskette Drive and an IBM Model M keyboard.

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