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Snatcher

MSX2 (AY-3-8910, K052539)

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  • ValleyBell Offline
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Snatcher

Post by ValleyBell »

TitleSnatcher
ComposerKonami Kukeiha Club
SystemMSX2
Sound ChipsSCC-I (K052539), PSG (AY-3-8910)
Tracks44
Playing time1:10:00
Pack authorsdsnatcher73
Pack version1.11
Last Update2020-02-09


Download Computers/MSX/Snatcher_(MSX2).zip (550 090 bytes)

Pack author's comment
One of the best soundtracks on MSX imho. It was logged wit nezplay so it shows as K051649 and I don’t know how to change it to K052539 (aka SCC-I or SCC+), any help would be appreciated!
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  • grauw Offline
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Post by grauw »

SCC+ is indicated by setting bit 31 of the frequency:

Code: Select all

0x9C: K051649/K052539 clock (32 bits)
        Input clock rate in Hz for the K051649 chip. A typical value is
        1789773. It should be 0 if there is no K051649 chip used.
        If bit 31 is set it is a K052539.
Iirc you do that with the following command:

Code: Select all

vgm_ptch -SetHzSCC1 0x80369E99 <file.vgm>

Post by sdsnatcher73 »

grauw wrote:SCC+ is indicated by setting bit 31 of the frequency:

Code: Select all

0x9C: K051649/K052539 clock (32 bits)
        Input clock rate in Hz for the K051649 chip. A typical value is
        1789773. It should be 0 if there is no K051649 chip used.
        If bit 31 is set it is a K052539.
Iirc you do that with the following command:

Code: Select all

vgm_ptch -SetHzSCC1 0x80369E99 <file.vgm>
Okay, it took some figuring out and the correct value for these tracks was: -SetHzSCC1:0x801B4F4C
Updated the pack accordingly...
Attachments
Snatcher (MSX2).zip
(377.65 KiB) Downloaded 303 times
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  • grauw Offline
  • Posts: 150
  • Joined: 2015-02-22, 3:40:22

Post by grauw »

Ah, yes, I forgot the VGM format has a /2 divider on the SCC clock frequency…

Post by sdsnatcher73 »

Small update...
Attachments
Snatcher (MSX2).zip
(362.85 KiB) Downloaded 288 times

Post by sdsnatcher73 »

I mistakenly used vgm_facc in my packs (did not RTFM). I've redone them now without using vgm_facc...
Attachments
Snatcher (MSX2).zip
(559.05 KiB) Downloaded 271 times

Post by sdsnatcher73 »

I took another look/listen and the loop for track 36 (Goodbye Harry) was sub-optimal. It has been shorted by ~50s now.
Attachments
Snatcher (MSX2).zip
(553.57 KiB) Downloaded 266 times
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