WOW friends, our projects gets more and more fascinating now, almost 1 1/2 year after we've started it.
@Truman: My honour also for that you now had promoted to Moderator here, its great. Also a big thx for coding that cool icon into your newest version of CDReader.
Few days ago tried to burn such physical leadin <-> Data GAP test CD, but I didnt get it how I have to do that now - please can you advise me a little bit? As example:
I ve build an usual ISO with the CDReader 'CD to image' including full leadin sector files, lenght 8000 sectors. Now when I wanted to burn it with physical Gap and the new feature PG1 at 0 (Pregap sector 0 starts at 0:00:00 in expl.) my leadin ISO would be burned from -8150 (instead of -11xxx). But this way we dont get any physical GAP. The PG1@0 feature is superb, no question, but I wonder how we can create that physical Gap! Just again by skip sector file or is there another method without first burning usual data track unclosed with finally poweroff switched leadin burning (without leadout)?
For me that issue yet isnt any big problem, 'cause I need to burn the PSX Test CDs with my old Mitsumi at 1x speed anyway, because the lowest 4x (hardware limited) @ Liteon results in a bit too low "PSX readable quality". My old PSX can read 4x Liteon written disx, but not very good, so I prefer to use the 1x burn with Mitsumi including power off switch broken lead-in without lead-out (psx dont need any leadout, even if the datatrack was broken by laser switched off, it still boots).
About the circuit diagram: The biggest problem isnt create one, but finding out how that connections have been made exactly! I forgot it already ggg Have to open the PSX again or find the needed info somewhere into our huge 1.st thread. I also attached some 4.7k resistor somewhere, but where?? ))
OK that was history, I did ya all that favour:
About the stereo pin recording:
For the moment I only could offer:
Pin5 CD Unit - in combination with - Pin5 Modchip Subcode Puffer Line
Pin5 CD Unit - in combination with - Pin6 Modchip SCEx Input Line
Its fantastic that you're back again with such good offers about help, ICs, circuits etc. For the moment I evtl. only could connect a cardreader unit into the PSX in combination with programmable smartcards like Fun (AVR - AT90S8515) or PIC/PIC2 16F84 16F876 -877. But I suggest, its better for now, you only work something out with Truman, otherwise it could became too confusing.
btw as it seems we're all in "SCEE country" This also make alot thing easier, yet.
And: Doubt this info helps, but there exists alot cardwriter programs which use serial interface. Maybe theres a way to receive directly some modified impulses over Com2 by a little "receiver - proggie".
@Blame & Andrew:
About the "leadin at different position" test:
Little idea: Perhaps also give it a try with a larger leadin at the usual position. I dont know how far above the usual 0:02:00 position the datatrack still boots.
And another interresting thought:
If the PSX looks at 1x for a frequency between around 8 khz and 30khz (as I can remember thats Andrews test results on his wobble page):
If we manually slow down the speed to 0.5 speed, we would have the double amount of felt tip pattern space, if the laser still accepts also halven frequency (should be around 10 kHz then if it was around 20 before and normally).