One chip MSX improvement project

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By HRA!

Master (199)

HRA!'s picture

16-01-2020, 15:35

I have released new version.

http://hraroom.s602.xrea.com/ocm/index.html

[Update contents]
(1) Implemented new vdp_sprite.

By tfh

Paragon (1977)

tfh's picture

16-01-2020, 15:58

You're bering very productive!

By HRA!

Master (199)

HRA!'s picture

16-01-2020, 22:03

http://map.grauw.nl/articles/vdp-vram-timing/vdp-timing.html

I would like to make a more realistic V9958 clone using the information provided here. ;-)
For that, new vdp_sprite is still incomplete.

By KdL

Paragon (1254)

KdL's picture

17-01-2020, 04:47

HRA! wrote:

http://map.grauw.nl/articles/vdp-vram-timing/vdp-timing.html

I would like to make a more realistic V9958 clone using the information provided here. ;-)
For that, new vdp_sprite is still incomplete.

And also here:
http://map.grauw.nl/articles/vdp-vram-timing/vdp-timing-2.html

;-D

By Grauw

Ascended (8683)

Grauw's picture

17-01-2020, 08:31

I think that would be amazing.

By KdL

Paragon (1254)

KdL's picture

17-01-2020, 10:55

Grauw wrote:

I think that would be amazing.

In the split screen of TileTile, the sprite are already perfectly aligned in the vertical axis using the new vdp sprite module, and they are properly hidden with the text box.

https://bitbucket.org/grauw/tiletile

By Grauw

Ascended (8683)

Grauw's picture

17-01-2020, 11:40

Cool that you’re using it to test Smile. If you need any help figuring out particular VDP details, I could help provide some test cases possibly (like half way line splits or vertical adjust behaviour or a VRAM access speed stress test). Pgimeno may also be able to provide some tests, since he’s making a couple for openMSX at the moment I think.

By HRA!

Master (199)

HRA!'s picture

25-01-2020, 15:41

I have released new version of 1chipMSX改 (v2020.01.25).
http://hraroom.s602.xrea.com/ocm/index.html

[Update contents]
(1) Provide feedback on corrections to OCM-PLD v3.8.
(2) Verilog conversion of some circuits of vdp.
vdp_vga, vdp_hvcounter, vdp_ssg, vdp_sprite, vdp_linebuf, vdp_doublebuf.
(3) Updated vdp_sprite. Fixed a bug that MSX2 + logo display was distorted.

By KdL

Paragon (1254)

KdL's picture

25-01-2020, 18:58

Grauw wrote:

Cool that you’re using it to test Smile. If you need any help figuring out particular VDP details, I could help provide some test cases possibly (like half way line splits or vertical adjust behaviour or a VRAM access speed stress test). Pgimeno may also be able to provide some tests, since he’s making a couple for openMSX at the moment I think.

As soon as the new VDP is stable enough, I will send you a trial version to analyze the remaining shortcomings and bugs.

By HRA!

Master (199)

HRA!'s picture

25-01-2020, 23:16

I have released new version of 1chipMSX改 (v2020.01.26).
http://hraroom.s602.xrea.com/ocm/index.html

[Update contents]
(1) Adjust timing of V-Sync interrupt.

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