Good to know, thanks! The manfucturing date code (9705) seems to be only 12 weeks newer than Charles' dump (the actual ROM is probably same built/date), but W3021, SC430927PB does look as if the "region-free" yarozes are still containing some small region specific differences, maybe just something different than the "for NETNA" region string. The "30" in "W3021" is also hinting that the chip is something "PAL" specific.Orion_ wrote:ok so, I have located the chip at the back of the board, here are the numbers on it: W3021, SC430927PB, G63C 185, JSAB9705B - My Yaronet is a DTL-H3002 PAL
Would be interesting if somebody could dump that chip. The PU-8 board should have nice solder pads, so it should be quite easy (as long as you have some PC or other computer hardware that can deal with 3.5V serial data transfers).
Datasheetarchive.com is my favorite source. For the PSX chips:Michele133 wrote:http://www.freescale.com/webapp/sps/sit ... 4684498633
this is a list of hc05 legacy-product maybe there is the psx version of cpu-microcontroller?
http://www.datasheetarchive.com/MC68HC0 ... sheet.html
For 80pin (old cdrom controller): The MC68HC05L16/MC68HC705L16 datasheet should be the perfect choice, the psx appears to be using exactly that chip (only drawback is that it doesn't go into detail about bootstrap mode, but TriMesh has figured out how it works anyways).
For 52pin (new cdrom controller): The chip should be called "MC68HC05G6" but I haven't found an exact datasheet for it. However, the pinouts can be found in PSX service manuals, and the I/O ports are resembling that in MC68HC05L16/MC68HC705L16 datasheet (but without the LCD feature) or MC68HC05G3 (705G4) datasheet (but without Port G,H,J).
For 32pin (digital joypad): I haven't found any Motorola datasheet nor Sony service manuals :- / Pinouts would be very interesting for dumping purposes - especially the "/IRQ" pin(s) for entering test mode (at the moment I only know four pins: Pin12=GND, and Pin28=3.5V, Pin26/27=OSC).
Motorola's MC68HC05P6FBE and MC68HC05P6FB chips appear to have 32pins - maybe those chips were used in joypads - the chips are also mentioned to exist on freescale.com (but unfortunetly, they are just redirecting to 28pin MC68HC05P6 datasheets).