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Petscii Robots port in the works
Posted: Mon Feb 08, 2021 8:14 pm
by SlithyMatt
1 hour ago, StinkerB06 said:
I thought the YM3012 was just used to convert the digital audio bitstreams from the YM2151 into analog audio outputs. Like, the CPU wouldn't be able to address it.
That's correct. The VERA has its own DAC to output sound from the PSG and PCM.
Petscii Robots port in the works
Posted: Mon Feb 08, 2021 8:32 pm
by OguzhanKuyubasi
17 minutes ago, SlithyMatt said:
That's correct. The VERA has its own DAC to output sound from the PSG and PCM.
I have a question can the VERA playing PCM also for Music or only for Sound Effects?
Petscii Robots port in the works
Posted: Mon Feb 08, 2021 9:15 pm
by SlithyMatt
39 minutes ago, OguzhanKuyubasi said:
I have a question can the VERA playing PCM also for Music or only for Sound Effects?
Using the PCM (by itself) for music would be a bad idea. It requires way too much memory to hold uncompressed audio samples, and the 65C02 is not powerful enough to decode MP3 or anything in real time. The PSG or the YM2151 are FAR more efficient options for music. What you can use the PCM for are non-pitched instrument samples, like drum hits, which only take up a few kilobytes, and you can synch those up with a PSG or YM2151 track.
Petscii Robots port in the works
Posted: Mon Feb 08, 2021 9:30 pm
by OguzhanKuyubasi
14 minutes ago, SlithyMatt said:
Using the PCM (by itself) for music would be a bad idea. It requires way too much memory to hold uncompressed audio samples, and the 65C02 is not powerful enough to decode MP3 or anything in real time. The PSG or the YM2151 are FAR more efficient options for music. What you can use the PCM for are non-pitched instrument samples, like drum hits, which only take up a few kilobytes, and you can synch those up with a PSG or YM2151 track.
Combining the YM2151 and the PCM from the VERA you got good music like the Arcades and the Sharp X68000.
Petscii Robots port in the works
Posted: Tue Feb 09, 2021 5:42 am
by xanthrou
8 hours ago, OguzhanKuyubasi said:
Combining the YM2151 and the PCM from the VERA you got good music like the Arcades and the Sharp X68000.
And add the PSG as well.
Petscii Robots port in the works
Posted: Thu Dec 23, 2021 9:06 pm
by martinot
On 1/31/2021 at 6:25 PM, The 8-Bit Guy said:
I spent some time the last few days converting Petscii Robots over to the X16. It's now more or less fully functional. Well, you can play the game from beginning to end, anyway.. But it still lacks sound, and it is using the default font, which I hope to change soon to the PET font, which will make it look nicer. It also lacks a lot of effects like screen-shake, EMP flash, etc. I'll be working to add those in over the next few days. Also, since the game is designed for 40x25 screen, there is some black area at the bottom.
That being said, once I get this version completed, I'll slowly begin the transition to a custom graphic version for the X16 as originally promised, which should fill the whole screen.
Looks great!
? X-mas wish; would it be possible for you to do an Apple II GS version of the game?
Petscii Robots port in the works
Posted: Thu Dec 23, 2021 9:59 pm
by Scott Robison
On 12/23/2021 at 2:06 PM, martinot said:
Looks great! ?
X-mas wish; would it be possible for you to do an Apple II GS version of the game?
He doesn't do most of the ports himself. He's very involved in the process, but other teams tackle the coding. Someone was working on the Apple IIgs, but they've gone radio silent last I'd heard. It's unknown when or if they'll get back to it.
Petscii Robots port in the works
Posted: Thu Dec 23, 2021 11:27 pm
by martinot
On 12/23/2021 at 10:59 PM, Scott Robison said:
He doesn't do most of the ports himself. He's very involved in the process, but other teams tackle the coding. Someone was working on the Apple IIgs, but they've gone radio silent last I'd heard. It's unknown when or if they'll get back to it.
Ahh. Thanks for the update.
Very unfortunate!
Petscii Robots port in the works
Posted: Sat Jan 15, 2022 6:09 am
by Cyber
I noticed this thread got outdated. On August 30, 2021, there was a video by The 8 Bit Guy, showing progress made in X16 port of The Petscii Robots.
Here is a link to video,
notice it already has start time for the X16 part:
Also here is a few screenshots of the game from this video:
Petscii Robots port in the works
Posted: Sat Jan 22, 2022 12:32 am
by Falken
We'd also need an official port of Elite to the X16. Would make the X16 a real retro machine. Anybody have a good connection to David Braben? ? (And a couple of thousand quid.)
