Registered on 2022-10-19 09:15:20 UTC
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Response to a comment by MottZilla (Archived from PSXDEV.net) on DIYing a plug that fits the PlayStation's parallel port to boot from a ROM - part 10 | Posted on 2022-03-03 06:23:49 UTC
If you're not streaming any data from the CD (CDDA, XA, STR), then you could theoretically write a custom library for universally loading files: if the game is running from a CD, then it would load the requested data from the CD, but if the game is running from memory loaded via serial, then it would talk over serial with a program running on the PC which would send the requested files back to the console. Since it is proven that the PlayStation's serial link can communicate at 1 Mbps (so 100 kB/s – 1 start bit, 8 data bits and 1 stop bit), it wouldn't be that much slower than reading from the CD (the PlayStation's CD drive can run at max. 2x speed, so 300 kB/s max). The method of communication could be #defined somewhere in a header file.
Personally, I haven't done this yet, but I'm looking into it. For now, my projects have always been able to fit into the ~1.7 megabytes of free memory entirely (including all assets), so it wasn't a huge problem for me, but I worry that this might not continue for much longer before I start expanding my projects and I eventually run out of memory.
If I however do stream data from the CD, there is no other option then to just burn the CD (at least for me, I sadly don't own a PS-IO yet), and even that is not easy, the PlayStation is quite picky about the media/burning method (for example, in my instance CDDA sometimes gets corrupted into an earraping loud white noise on the PlayStation, while the same disc works fine in other CD players). So yeah, it depends on what you're doing.
Response to a comment by MottZilla (Archived from PSXDEV.net) on DIYing a plug that fits the PlayStation's parallel port to boot from a ROM - part 10 | Posted on 2022-02-28 06:20:07 UTC
I know, I have fixed them now. However, if my findings are correct, you shouldn't be able to easily short any two pins inside the motherboard's connector by pushing one in really hard, since they are quite spaced out in front of each other. And the console still boots fine, so no problem I guess.
I'm planning to hook up a simple ROM on which I will burn sioload. Imagine PSXSERIAL, but 9 times faster:
https://github.com/danhans42/sioload
Response to a comment by MottZilla (Archived from PSXDEV.net) on DIYing a plug that fits the PlayStation's parallel port to boot from a ROM - part 7 | Posted on 2022-02-27 17:31:49 UTC
Don't worry, I'll be careful. And yes, I'm looking forward to that moment as well! 😁
Response to a comment by MottZilla (Archived from PSXDEV.net) on DIYing a plug that fits the PlayStation's parallel port to boot from a ROM - part 7 | Posted on 2022-02-24 18:23:13 UTC
Don't worry, I haven't plugged it in yet (I can't, in fact, it does not fit). Of course, when I do (and before I turn on the console), I will make sure that none of the pins are touching (I will make a continuity test between the ends of the connector and the motherboard, just to be extra sure that nothing is shorted and that all pins are working).
However, all of the pins I am using are protected by resistors on the motherboard, so in case of a short, nothing should _really_ go wrong. I will of course make sure such thing does not happen, but this makes me confident that even if I screw up, the console will likely still be fine.
Response to a comment by MottZilla (Archived from PSXDEV.net) on DIYing a plug that fits the PlayStation's parallel port to boot from a ROM - part 6 | Posted on 2022-02-24 07:23:05 UTC
Thank you! 😁
The followup post will talk about my future plans.
Response to a comment by Shadow (Archived from PSXDEV.net) on DIYing a plug that fits the PlayStation's parallel port to boot from a ROM - part 3 | Posted on 2022-02-19 14:55:09 UTC
Thanks! 😁
Response to a comment by elatronion (Archived from PSXDEV.net) on Tutorial: Setting up the Psy-Q SDK under modern Linux | Posted on 2021-08-03 07:45:45 UTC
Thank you, I'm glad to hear that! 😁
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