amstrad cpc 6128

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DrOG
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Re: amstrad cpc 6128

Postby DrOG » Fri Jul 14, 2017 4:43 am

First of all, thanks for the developer for his sustained and devoted work!

Since months this is the only core which is still actively and continously debugged and enhanced.

Tested the latest core (amstrad_170713_r005.8.14.4e.rbf), in 15kHz mode it's just perfect, even the green OSD mode is working well (see screenshot #1).

But in scandoubler enabled mode, it's compatibility is still moderate (see screenshots #2 and #3, 'Nem támogatott üzemmód' means 'Unsupported Format'). Screenshots #1 and #2 taken from my Samsung LE40B650's framebuffer, #3 from my BenQ BL912, which says signal is 800x600@73Hz.
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Re: amstrad cpc 6128

Postby vebxenon » Wed Aug 16, 2017 6:23 pm

Well, FreeMac still believes in MiST and he still works in improving his core:

https://github.com/mist-devel/mist-bina ... es/amstrad

[Amstrad] r005.8.15 : arnoldemu's first FDC tesbench applied.

Core updated 5 days ago.

It's great to see new updates in our still living hardware.

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Re: amstrad cpc 6128

Postby vebxenon » Wed Aug 16, 2017 6:42 pm

Now, for example Street Fighter II Beta works! :cheers:
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Re: amstrad cpc 6128

Postby DrOG » Thu Aug 17, 2017 3:47 am

Nice work!!!

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Re: amstrad cpc 6128

Postby RobeInie » Sat Aug 19, 2017 7:16 pm

This is one of my favourite cores and I am happy because it have a lot of updates , !

In VGA the core goes at 60Hz and in Scart at 50Hz, is right ? Would it be at 50hz on VGA ?
(perhaps overclock option like the Spectrum core has?)

And I have read that will be able to load CDT , would be nice to see real time tape loading :)

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Re: amstrad cpc 6128

Postby DanyPPC » Sat Aug 19, 2017 8:41 pm

In VGA the vertical frequency is set on 72Hz if i don't i wrong.

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Re: amstrad cpc 6128

Postby DrOG » Sun Aug 20, 2017 5:01 am

I remember 73Hz, which is a pity, 72 or 75Hz would be much more compatible. But in SCART mode (50Hz) it's awesome!!!

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Re: amstrad cpc 6128

Postby DanyPPC » Mon Sep 18, 2017 7:13 pm

New Update r005.8.16c3 - Z80 instruction timing effort (MEM_slow=slow):

https://github.com/mist-devel/mist-bina ... es/amstrad

+Using T80se.T2Write=1 better scores at WinAPE plustest.dsk testbench Z80 instructions timing
+MEM_wr=slow (theory value, quick is a hacked value accelerating MEM_wr)

+Still Rising demo : less garbage pixels, can be run completly using MEM_wr=slow
+Logon's run - 3D meets the aging bits : better, can be run completly using MEM_wr=slow

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Re: amstrad cpc 6128

Postby nightshadowpt » Mon Sep 18, 2017 9:36 pm

Great to see another update for this amazing core.

Thank you for your effort. It is highly appreciated.

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Re: amstrad cpc 6128

Postby DrOG » Tue Sep 19, 2017 12:23 pm

Thanks for your continuous and exhaustive work!

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Re: amstrad cpc 6128

Postby DanyPPC » Wed Sep 20, 2017 8:54 pm

Another release candidate 4 (amstrad_170918_r005.8.16c4.rbf):

https://github.com/mist-devel/mist-bina ... es/amstrad

Instructions using 5T during M1 cycle does need 2 WAIT_n insertion. Problem is that I don't know exactly when inserting them,
Resulting WinAPE plustest.dsk testbench Z80 instructions timing border effect (previous instruction tested saying "I'm incorrect" but it was a correct one)
MEM_wr=slow (theory value, quick is a hacked value accelerating MEM_wr)

Still Rising demo : no more garbage pixels in plasma using MEM_wr=slow
30YMD : you can now use the main menu "cursor" using MEM_wr=slow

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Re: amstrad cpc 6128

Postby DrOG » Thu Sep 21, 2017 4:14 am

Awesome!!! :cheers:


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