That's not not allowed here, sorry.
Why you posted it, then asked... double posting AGAIN.... I have no idea. You really need to get your **** together before posting. Tired of dealing with it..
Sorry i didn't know that. It won't happen again, is there a way to take down my earlier post. Hey the double posting isn't happening on purpose i posted the first one yesterday then i posted again this morning. I am still new to this forum. The post should be a completely separate post , Sorry i don't mean to make your job difficult
13 years is a long time, not sure why you think they couldn't incorporate the SGI tech 13 years after they created it, 13 years in technology is an eternity. They also didn't just buy the chip from SGI, they licensed the tech (modified it for their needs most likely) and included it as a co-processor inside the CPU. The R3000 series from what I've seen was somewhat modular. Meaning, you got the MIPS core but then there were hooks for up to 4 co-processors that you could also include on the chip. Rather than use the MIPS co-processors, Sony designed their own custom ones for the PS1. This was clearly the design from the beginning. I even found a presentation given by the creator of the PS1 where he shows the original PS1 CPU die with the different modules labeled. You can see the MIPS core as well as the GTE, DMAC, and video decoder. I highly doubt the MIPS CPU you'll get off that PDA will have the required modules (or even compatible pinout but who knows) to work in the PS1 but I do hope you have fun trying!
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I found some specs on the PR13700 family mips chips. No mention of a GTE core. But it does support DMA so there should be no issue with DMA. But i also found a website that list a few more possible options for upgrades. Its a list of old devices containing R3000 and R4000 based CPUs.
If the PR13700 in the Philips Velo 500 lacks whats needed to run the ps1 then maybe one of these other devices might have one configured to do so. There a bunch of old devices containing R3000 variants. Maybe one will have a GTE core. Or maybe i just need find away to run an external gte core along side the faster processor or something along those lines. Maybe i could create a separate GTE chip or find one which would be much easier. The GTE has been reverse engineered as well. So i picture in my mind a mod chip containing a GTE running along side the faster processor. Hoping there would be away around the GTE. Possibly upgrade the GPU as well to one that does not require gte but then it complicates everything further but there has to be a way.
Poseidon
From LinuxMIPS
PR31100
PR31100 is is a single-chip, low-cost, integrated embedded processor. PR31100 consists of a 40MHz R3000 3.3V static CMOS CPU with 4 K Instruction / 1 K Data cache memory, w/o MMU, multiple DMA channels and a high-performance and flexible Bus Interface Unit (BIU) and external I/O modules.
This is another option for an upgrade for the ps1 the PR31100
PR31500
Poseidon v1.0
PR31500 is a 37MHz R3000 3.3V static CMOS CPU with R3000A TLB and 4K Instrution / 1K Data cache. PR31500 also contains multi-channel DMA controller, ROM, Flash, RAM, DRAM, SDRAM, SRAM, and PCMCIA controller and Dual-UART, SPI and High-speed serial interface controllers. Philips licensed a version of Toshiba's R3900 MIPS RISC processor core for the PR31500.
TwoChipPIC (for Personal Intelligent Communicator) chipset consists of the PR31500 microcontroller and the UCB1100 analog interface chip. The UCB1100 (
http://www.semiconductors.philips.com/pip/UCB1100_2.html) provides a 12-bit audio codec and a 14-bit modem codec, a touchscreen interface, and a 10-bit A/D converter for measuring battery voltages and other analog inputs.
PR31700
Poseidon v1.5
The PR31700 is a 75MHz R3000 (PR3901 Processor Core) with MMU, 4K Instruction / 1K Data cache. PR31700 also contains multi-channel DMA controller, ROM, Flash, RAM, DRAM, SDRAM, SRAM, and PCMCIA controller. It is also identical to the Toshiba 3912 processor from the TX39XX family. It is pretty clear that Philips licensed or bought this core directly from Toshiba.
The TwoChipPIC Plus chipset consists of Philips’ PR31700 and UCB1200 analog chip.