scph-1000 bios mod question
- phaseas
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scph-1000 bios mod question
i do own a scph-1000, the first jap model
i was wondering if it would be possible to remove its bios and place a "DTL-H1001" bios instead
and if so, how to proceed
perhaps there is some eeprom i can just dump DTL-H1001 and solder?
im assuming DTL-H1001 would be compatible but i could be wrong
anyone with experience in this field?
help / ideas will be appreciated
thanks
i was wondering if it would be possible to remove its bios and place a "DTL-H1001" bios instead
and if so, how to proceed
perhaps there is some eeprom i can just dump DTL-H1001 and solder?
im assuming DTL-H1001 would be compatible but i could be wrong
anyone with experience in this field?
help / ideas will be appreciated
thanks
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Administrator Verified
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You can swap the BIOS, but the HC05 will also need to be swapped if you want to boot games and on those older PU-8 boards it typically uses the 80-pin variant which is far less common. To get around swapping the HC05 though, you can just install 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.
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.
- phaseas
- Curious PSXDEV User
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- Joined: Oct 26, 2024
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sounds cool, i guess i can install the psnee as modchip, sounds far more easy to me.
no idea what HC05 is and im guessing i dont want to know, too many pins for my taste
can you recommend me wich eeprom to buy in order to replace the bios ?
i assume IC102 is the bios, right?
something i can swap with the same pinouts / voltage would be nice
guess im going to need datasheet of the original rom pinout
btw this is my motherboard
no idea what HC05 is and im guessing i dont want to know, too many pins for my taste
can you recommend me wich eeprom to buy in order to replace the bios ?
i assume IC102 is the bios, right?
something i can swap with the same pinouts / voltage would be nice
guess im going to need datasheet of the original rom pinout
btw this is my motherboard
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Administrator Verified
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In a nutshell, the HC05 is basically a sort of CD-ROM controller and yes, IC102 is in fact the BIOS.
https://www.willsconsolemodifications.c ... uct_id=111
https://www.willsconsolemodifications.c ... uct_id=111
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.
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.
- phaseas
- Curious PSXDEV User
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- PlayStation Model: scph-1002
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Ok thats interestingAdministrator wrote: ↑October 29th, 2024, 2:13 am In a nutshell, the HC05 is basically a sort of CD-ROM controller and yes, IC102 is in fact the BIOS.
https://www.willsconsolemodifications.c ... uct_id=111
i was looking to get some kind of eeprom and throw DTL-H1001 in there, but this looks even better
correct me if im wrong, if i purchase this :
- PS1 BIOS Type:: PSX-XBOO
- PS1 Modchip Type:: Stealth 2.8a - JAP VER
first question:
i only need to swap this pcb with the bios, and then wire the modchip to the points in the motherboard, right?
second question:
does the components come already soldered into the pcb or i will have to do that?
can you confirm please? i realy appreciate the time and help you giving me here
- phaseas
- Curious PSXDEV User
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oh wait, my bios has 40 pin, so i guess this is not going to work for me. this thing has 32 pins
i must have another console with a dead laser lyng arround, will check that one
still i wonder if those pcb come pre-soldered
i must have another console with a dead laser lyng arround, will check that one
still i wonder if those pcb come pre-soldered
My bios clone does generate the scex signals on the address lines, you don't need a modchip when using that bios.
- phaseas
- Curious PSXDEV User
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- PlayStation Model: scph-1002
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you mean if i get psx-xboo i don't even need the modchip? dammit you're the boss
but this particular PlayStation is an scph-1000 model, which according to the website is not compatible
cos my stock bios has 40 pins instead of 38, as you can see in the picture attached
i will get my hands on a different psx model and then ill update the thread
as soon as i know which model is on my wardrobe ill purchase it
btw: thanks for your work, nocash. looks really nice
- phaseas
- Curious PSXDEV User
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aight so I've found an scph-7502 and its bios has 32 pins
so i went to purchase the psx-xboo from will's console mods, but it looks like the shop isn't working
can anyone recommend me a compatible eeprom and a programmer so i may do it myself?
im kinda lost now
perhaps another way to buy psx-xboo ?
so i went to purchase the psx-xboo from will's console mods, but it looks like the shop isn't working
can anyone recommend me a compatible eeprom and a programmer so i may do it myself?
im kinda lost now
perhaps another way to buy psx-xboo ?
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Squaresoft74 Verified
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Can this be improved in a way that it is fully stealth ?
Currently games like Dino Crisis, Legend of Mana, BioHazard 3 , etc... trigger AP screens when using your bios.
First of, the wiring info is here http://problemkaputt.de/psxspx-cdrom-pr ... dchips.htm (but I am not aware of anybody having ever used that).Squaresoft74 wrote: ↑October 31st, 2024, 7:15 amCan this be improved in a way that it is fully stealth ?
The kernel clone is generating the SCEx signal when booting from cdrom, so after booting it will be "stealth". Or perhaps "too stealth" for some cases (it won't work if a game is intentionally re-reading the SCEx from the TOC area) (and it won't work on disc changes, although, the kernel could theoretically try to sense that situation, and take over the CPU to re-send the SCEx string, but that may have more disadvantages than advantages).
Is that problem unrelated to modchips? Like, It doesn't work in no$psx, or on real hardware, even when using licensed retail discs?Squaresoft74 wrote: ↑October 31st, 2024, 7:15 am Currently games like Dino Crisis, Legend of Mana, BioHazard 3 , etc... trigger AP screens when using your bios.
I would like to clarify two things.
The kernel clone is freeware you can't buy it anywhere.
Xboo refers to the "boot exe files from parallel port" feature, which is only a small (but perhaps the most useful) part of the kernel.
- phaseas
- Curious PSXDEV User
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- Joined: Oct 26, 2024
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- PlayStation Model: scph-1002
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i understand its freeware, but it was being sold at wills console mods, that's why i asked for another seller
i downloaded the bios thru yours no$psx debugger.
now I'm guessing, i can use a programmer like TL866II Plus, to write this bios i got from your debugger, into an eeprom like 39VF040, desolder the original bios, and solder 39VF040 , right?
at least that's what it looks like, correct me if I'm wrong, please.
EDIT:
okay i found this topic
https://www.psxdev.net/forum/viewtopic. ... 2&start=20
postal used w27e040P-12 , lets say i pick the same eeprom and i dump the bios there
question is, will this work? I'm on the right path?
EDIT2:
please recommend me a compatible eeprom, a DIP one if possible. ty
i downloaded the bios thru yours no$psx debugger.
now I'm guessing, i can use a programmer like TL866II Plus, to write this bios i got from your debugger, into an eeprom like 39VF040, desolder the original bios, and solder 39VF040 , right?
at least that's what it looks like, correct me if I'm wrong, please.
EDIT:
okay i found this topic
https://www.psxdev.net/forum/viewtopic. ... 2&start=20
postal used w27e040P-12 , lets say i pick the same eeprom and i dump the bios there
question is, will this work? I'm on the right path?
EDIT2:
please recommend me a compatible eeprom, a DIP one if possible. ty
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Administrator Verified
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From Will, you're buying the software (BIOS) from NO$CASH which is freeware but you're buying the chip itself and having Will program it which is why it costs money (you're paying for parts and labour). I believe Will should however kindly donate a portion to NO$CASH from the sales of the Xboo software.
If you want to do it yourself, a good programmer to use is the Willem Universal Programmer.
If you want to do it yourself, a good programmer to use is the Willem Universal Programmer.
Development Console: SCPH-5502 with 8MB RAM, MM3 Modchip, PAL 60 Colour Modification (for NTSC), PSIO Switch Board, DB-9 breakout headers for both RGB and Serial output and an Xplorer with CAETLA 0.34.
PlayStation Development PC: Windows 98 SE, Pentium 3 at 400MHz, 128MB SDRAM, DTL-H2000, DTL-H2010, DTL-H201A, DTL-S2020 (with 4GB SCSI-2 HDD), 21" Sony G420, CD-R burner, 3.25" and 5.25" Floppy Diskette Drives, ZIP 100 Diskette Drive and an IBM Model M keyboard.
PlayStation Development PC: Windows 98 SE, Pentium 3 at 400MHz, 128MB SDRAM, DTL-H2000, DTL-H2010, DTL-H201A, DTL-S2020 (with 4GB SCSI-2 HDD), 21" Sony G420, CD-R burner, 3.25" and 5.25" Floppy Diskette Drives, ZIP 100 Diskette Drive and an IBM Model M keyboard.
- phaseas
- Curious PSXDEV User
- Posts: 12
- Joined: Oct 26, 2024
- I am a: Solder-addicted zealot
- Motto: Solder. Focus. Repeat.
- PlayStation Model: scph-1002
- Location: Modding Lab
i know.... i understand that part, still , wills shop is not working anyways, seems like he had problems with payment options. so i cant pay, literally. that leaves me with only one option left.Administrator wrote: ↑November 9th, 2024, 2:54 am From Will, you're buying the software (BIOS) from NO$CASH which is freeware but you're buying the chip itself and having Will program it which is why it costs money (you're paying for parts and labour). I believe Will should however kindly donate a portion to NO$CASH from the sales of the Xboo software.
If you want to do it yourself, a good programmer to use is the Willem Universal Programmer.
I'm gonna have to make it myself.
i already have a T48 programmer, so i just bought a bunch of w27e040P-12 for testing.
my plan is to make it just like "postal2201" guy did in the picture, since he also attached schematics
my questions where more focused towards the programming issues, like which eeprom fits better, because i did read in another topic, no$cash bios is 256kb and you need to make a file and paste it twice so it fits the 512kb? i cant find sayd topic atm.
anyway, i will update this topic with questions when the eeprom i bought, gets delivered from china, and the socket is already installed on my mobo, if i cant manage to pull it off by myself..
- phaseas
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aight, why i cant switch between disk/card/settings/help ?
it only allows me to pick "disk"
what i am missing?
EDIT: oh okay it needs the disk drive. nevermind...
solved.
- phaseas
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why it isn't picking up pal games on my scph-7000 Japanese console then? original ones.
detects them like audio disk instead
what i am missing?
Did you follow the wiring info for the "modchip feature" that I had linked above?
- phaseas
- Curious PSXDEV User
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i totally missed your post, so i didn't ...
basically i just wired pin1 from the eeprom to pin1 on the motherboard
same for pin 2- to 31
then i wired pin 32 to the 5v output of the voltage regulator, cos this eeprom needs 5v instead of 3.3v
gotta be honest, I'm not sure if i understood your instructions...
this is a PU-20 motherboard, scph-7000.
lets take a look at your wiring info :
Internal Kernel ROM version, for older boards (PU-7 through PU-20):
GATE---------GND
DATA---------A20
therefore, if i understood correctly...i have to connect DATA to A20, and ground GATE, right?
DATA is IC706.Pin1 (CG) (16pin "118" (uPC5023GR-118) ;PU-18 .. PU-20
A20 is CPU.Pin149(A20) (208-pin CPU CXD8530 or CXD8606) ;PU-7 .. PM-41(2)
GATE on PU-20 is usually IC706.Pin10 (but IC706.Pin7 might work, too).
EDIT:
SOLVED, THANK YOU
- phaseas
- Curious PSXDEV User
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OK, one last question:nocash wrote: ↑November 3rd, 2024, 4:21 amFirst of, the wiring info is here http://problemkaputt.de/psxspx-cdrom-pr ... dchips.htm (but I am not aware of anybody having ever used that).Squaresoft74 wrote: ↑October 31st, 2024, 7:15 amCan this be improved in a way that it is fully stealth ?
The kernel clone is generating the SCEx signal when booting from cdrom, so after booting it will be "stealth". Or perhaps "too stealth" for some cases (it won't work if a game is intentionally re-reading the SCEx from the TOC area) (and it won't work on disc changes, although, the kernel could theoretically try to sense that situation, and take over the CPU to re-send the SCEx string, but that may have more disadvantages than advantages).
Is that problem unrelated to modchips? Like, It doesn't work in no$psx, or on real hardware, even when using licensed retail discs?Squaresoft74 wrote: ↑October 31st, 2024, 7:15 am Currently games like Dino Crisis, Legend of Mana, BioHazard 3 , etc... trigger AP screens when using your bios.
is there any way to allow disk changes with your bios?
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