too close for comfort - black label

[trap15]

I doubt, had the same idea ~4years ago, but at least my tests says its seems not true.
so I think blitter works in a stupid cheap and ineffective (like most things in Cave hardware LOL) fixed pipeline, i.e. it always do blend, or at least always do 3 memory accesses at each pixel blit - read source pixel, read destination, write destination, even if read destination not needed with blend off.

That's pretty CAVE quality haha. I imagine improving that would have made the later era games run a lot better, but what can you do I guess.

so I suspect in real YMZ770 keyon/off events handled only at certain time, lets say each 32(?) sound samples (sequencer clock) for example...

This would make sense, OPN series only processes key on/off every update cycle (3*4 master clocks on OPN I think?).

trap15 I know you are familiar with sound ICs and somewhat good at this, why not pay attention to YMZ770 ?
instead of wasting time on this stupid slowdowns (which no one cares except few crazy shmupfuns )

Heheh. I actually haven't really put any work into any of the slowdown stuff in a long time. I don't really have the time anymore to mess with the YMZ770, and I'm not really that interested in it either given it's a sorta boring sample playback chip. I have a sizable backlog of more interesting and weird problems to work on

[Kyle]

Thanks a ton for this release! It runs much better than MAME.

also, shader filtering is not implemented for CV1K.

Is this on the todo list? I have a VGA scanline generator but the other settings would be nice.

[rtw]

In order to improve the emulation in both demul and MAME we need to know how the blitter is connected to the SH3.

We can do this by taking an x-ray of the PCB however due to the nature of x-rays we will most likely destroy / corrupt the FLASH contents and maybe the CPLD.

So if anyone has a broken CV1K PCB or a spare and wants to donate it for science PM me.

[Jockel]

In order to improve the emulation in both demul and MAME we need to know how the blitter is connected to the SH3.

We can do this by taking an x-ray of the PCB however due to the nature of x-rays we will most likely destroy / corrupt the FLASH contents and maybe the CPLD.

So if anyone has a broken CV1K PCB or a spare and wants to donate it for science PM me.

I'm willing to lend mine (working, Ibara) out for the greater good, but if it breaks in the process I'd love you to try your best to fix it. And of course return it to me.

[rtw]

I'm willing to lend mine (working, Ibara) out for the greater good, but if it breaks in the process I'd love you to try your best to fix it. And of course return it to me.

A kind member here at shmups has actually donated money to buy a specimen already

[Jockel]

Awesome! Are extra funds needed? I'll gladly chip in a few Eurobucks.

[rtw]

Awesome! Are extra funds needed? I'll gladly chip in a few Eurobucks.

More funds might be needed at a later stage, your offer has been noted

[emphatic]

Cool stuff, rtw.

[Koma]

rtw,i have a faulty Mushihimesama pcb,need to diagnose more on it but note if needed i'm here to donate/lend/help

[thetricker24]

I'm willing to lend mine (working, Ibara) out for the greater good, but if it breaks in the process I'd love you to try your best to fix it. And of course return it to me.

A kind member here at shmups has actually donated money to buy a specimen already

sounds nice! you found anything?

[rtw]

sounds nice! you found anything?

patience, we're just getting started

[thetricker24]

sounds nice! you found anything?

patience, we're just getting started

well, good luck !

[Strikers1945guy]

In order to improve the emulation in both demul and MAME we need to know how the blitter is connected to the SH3.

We can do this by taking an x-ray of the PCB however due to the nature of x-rays we will most likely destroy / corrupt the FLASH contents and maybe the CPLD.

So if anyone has a broken CV1K PCB or a spare and wants to donate it for science PM me.

Curious how you got your hands on an xray machine??

[Jockel]

Curious how you got your hands on an xray machine??

< He's a scientist, obviously.

[rtw]

donator: Mld, photoshop magic: dmauro, scanner: rtw

The hi-res image will not be shared here, it has already been shared with the appropriate individuals.

However if someone wants to create a schematic in Eagle or similar, PM me

[emphatic]

Wow!

[Animaitor]

Sexy!

[brentsg]

In order to improve the emulation in both demul and MAME we need to know how the blitter is connected to the SH3.

We can do this by taking an x-ray of the PCB however due to the nature of x-rays we will most likely destroy / corrupt the FLASH contents and maybe the CPLD.

So if anyone has a broken CV1K PCB or a spare and wants to donate it for science PM me.

Curious how you got your hands on an xray machine??

Actually, rtw makes all guests walk thru an x-ray machine before entering his secret lair.

[PAPER/ARTILLERY]

Impressive. This is the kind of thing that makes me love shmups farm.

[Animaitor]

Actually, rtw makes all guests walk thru an x-ray machine before entering his secret lair.

hahaha! What machine? He's got x-ray eyes...

[drunkninja24]

donator: Mld, photoshop magic: dmauro, scanner: rtw

The hi-res image will not be shared here, it has already been shared with the appropriate individuals.

However if someone wants to create a schematic in Eagle or similar, PM me

good stuff fellas, hopefully we can get a better understanding of the boards now and better emulation

[pbsk8]

How taking a x ray pic could help understand the blitter?

Does this often happen to those boards which haven't been emulated by mame?

[Xyga]

So close now we can see through.

[captpain]

donator: Mld, photoshop magic: dmauro, scanner: rtw

The hi-res image will not be shared here, it has already been shared with the appropriate individuals.

However if someone wants to create a schematic in Eagle or similar, PM me

Cool!

[thetricker24]

How taking a x ray pic could help understand the blitter?

Does this often happen to those boards which haven't been emulated by mame?

i also wanna know this

[mdsfx]

Have there been any major changes for Cave roms since mame 142/143 to the more current 164?

[Xyga]

Have there been any major changes for Cave roms since mame 142/143 to the more current 164?

Yes, several.
IIRC I've had to update the whole cv1k romset at least 3 or 4 times.

[mdsfx]

Have there been any major changes for Cave roms since mame 142/143 to the more current 164?

Yes, several.
IIRC I've had to update the whole cv1k romset at least 3 or 4 times.

Holy crap I'm way behind! DFK?! Geez, seems almost too soon, but I love that I can essentially archive these in mame for when my 360 discs/console no longer function.

Also, wtf at people taking x-rays of PCBs. That's the coolest sh*t I've ever seen.

[BPzeBanshee]

How taking a x ray pic could help understand the blitter?

Does this often happen to those boards which haven't been emulated by mame?

i also wanna know this

I'm no expert and rtw/trap15/etc could probably explain it better, but not all PCBs are printed on a single layer. Sometimes (I imagine more often now with recent boards) there's connections running inside the board as well as on top which can't be seen with the normal eye and if you're missing the correct amount of lines coming out of a chip obviously you're missing pieces in terms of accurately simulating the chip.

[Udderdude]

The PCBs are 3D, even if the games aren't ..