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VERY strange! How to truly reset the YM2413/MSX-MUSIC?

by Bengalack on 12-01-2022, 16:13
Score: 176.81 %, Type: Forum topic , Comments: 3 comments
Documentation says: " All registers are cleared to 0 by initialization (initial clear IC terminal = 0 ... regs to 0? I know bits and bytes, but I don't really "get" music that well - could ... tool to debug which values are set exactly. If the drum is first played (via register 0EH) before its ...

YM2413 producing buggy output - is that even possible?

by Bengalack on 13-01-2022, 23:03
Score: 176.82 %, Type: Forum topic , Comments: 18 comments
that worked, was to set the volume of hithat/cymbal to 1 or 0 (silent)... but that is not ideal (as ... that "... Key-ON bits $26, $27,$28 must always be cleared to 0. Slots 13~18 are related with percussion ... World and it does something strange regarding the 0x0E register. I copy here a piece: Quote: ...

vgm_rec-command (tcl) would benefit from setting 'RATE'

by Bengalack on 30-01-2022, 10:13
Score: 177.34 %, Type: Forum topic , Comments: 7 comments
that it responds: "VGM Frame Rate 0 - set to 60." - which is wrong, as I know the file was recorded ... for the system's speed. VGM 1.00 files will have a value of 0. Seems to me that this value should be set. How could openMSX know when How could openMSX know when to put in 0 and when not? You can set ...

How does this "CPU Turbo mode" (5.37 MHz) work?

by Bengalack on 08-02-2022, 18:55
Score: 177.6 %, Type: Forum topic , Comments: 5 comments
I can't seem to find too much information about this mode. There is some info at https://www.msx.org/wiki/Panasonic_FS-A1WSX#CPU_Turbo_mode and at http://map.grauw.nl/resources/msx_io_ports.php#expanded_io and it seems to be available ...

*Save games* on MSX - type: "slot selection"/"File#"

by Bengalack on 21-02-2022, 17:12
Score: 177.98 %, Type: Forum topic , Comments: 4 comments
https://msx.org/forum/msx-talk/development/i-have-finished-it?page=0 (General discussion) ...

openmsx video recording - not precisely 50 and 60 Hz when replayed?

by Bengalack on 25-04-2022, 18:37
Score: 180.32 %, Type: Forum topic , Comments: 2 comments
I'm using the record feature a lot these days. This, to make sure that some parts of Lilly's Saga is experienced identically in 50Hz and 60Hz. To verify, I've been using a video editor to check the different frequency-recordings against ...

YM2413 wait-states emulation in openmsx 17

by Bengalack on 16-01-2022, 17:10
Score: 177.82 %, Type: Forum topic , Comments: 10 comments
not too bad on a 59736 cycle frame budget (0.17% of frame time), could be much worse for a 50x factor. ... case seems not too bad on a 59736 cycle frame budget (0.17% of frame time), could be much worse ... openmsx-17.0-360-g211efaef2-windows-vc-x64-bin-msi, music sounds perfectly using the tight 84-cycles loop This is great! But ... I did test ...

Using OR-color, parts of sprite in y-dir is masked away

by Bengalack on 17-08-2022, 18:16
Score: 183.99 %, Type: Forum topic , Comments: 2 comments
https://webmsx.org/?MACHINE=MSX2&ROM=https://drive.google.co... Here we have these 3 16x16 sprites, with a full/filled square, like this: Sprite 0: Color 0x02 "green", no CC-bit Sprite 1: Color 0x04 "blue", no CC-bit Sprite 2: Color 0x08 "red", CC-bit set Sprite 0|2: OR-Color 0x02|0x08 = 0x0A "yellow" ...

Is there a kind person who could offer a quick test on real hardware?

by Bengalack on 30-08-2022, 20:00
Score: 184.45 %, Type: Forum topic , Comments: 5 comments
I'm making a game (megarom) called Lilly's Saga for MSX2 and I'm in need of testing a **worst case scenario (60Hz)** on various physical MSX2s/MSX2+s. It's been tested in openmsx with all kinds of configurations and runs fine. In ...

Reverse Run-To (debugger)

by Bengalack on 29-04-2022, 10:23
Score: 181.39 %, Type: Forum topic , Comments: 5 comments
the PC for more than 3 or so? This wil avoid push en pops, but will stop on a jr, jp, call, ret etc. ...
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