what is the status of Slotmans 'prince of persia' ?

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Por PingPong

Prophet (3448)

Imagen del PingPong

05-04-2008, 15:17

About the underevaluated vdp cmd engine i think good examples of sw sprites are kpiball from matra or blade lords. they use smooth sw sprites
(kpi uses also some big balls)

Por AuroraMSX

Paragon (1901)

Imagen del AuroraMSX

05-04-2008, 20:42

So even having a z80 access would not improve almost anything (to be precise, in some situation could improve the way we can access vram, resulting in a improvement, but on the majority this is not the true problem) because the video accesses from/to CPU MUST WAIT THE availability of VRAM. Only when VRAM is idle for the task of video generation the CPU can access. And the problem here is that the VRAM is almost always busy for video task.Then I guess the real solution would be to have the VRAM as dual-ported RAM so that the Z80 and the VDP can access VRAM at the same time. ;) Ok, it's probably a tad expensive but hey, we'd at least have a fast machine! :P

Por PingPong

Prophet (3448)

Imagen del PingPong

05-04-2008, 20:51

So even having a z80 access would not improve almost anything (to be precise, in some situation could improve the way we can access vram, resulting in a improvement, but on the majority this is not the true problem) because the video accesses from/to CPU MUST WAIT THE availability of VRAM. Only when VRAM is idle for the task of video generation the CPU can access. And the problem here is that the VRAM is almost always busy for video task.Then I guess the real solution would be to have the VRAM as dual-ported RAM so that the Z80 and the VDP can access VRAM at the same time. ;) Ok, it's probably a tad expensive but hey, we'd at least have a fast machine! :P

Not required. if VRAM can cope with a half period of access then both the vdp / z80 can use it more faster.
That's the secret of advram. Having those vram chips allowed also a faster vdp without the needing to change the way z80 interacts with vram. take in mind that v9990 uses dual port ram but is i/o based like the other vdp's. And it's not slow.... So not a question of way to access, mainly a question of vram speed....

Por nikodr

Paladin (727)

Imagen del nikodr

27-05-2008, 05:31

Por pitpan

Prophet (3131)

Imagen del pitpan

27-05-2008, 08:43

Bu IIRC PoP was never officially released for ZX. There's just a Russian port made for some of these CCCP clones with higher CPU clocks and subtle hardware differences. Again, I might be totally wrong Sad

Por Manuel

Ascended (15750)

Imagen del Manuel

27-05-2008, 09:19

niko: no, that's the VDU/VSU (whatever it was, sorry for not looking it up) demo, written in basic.

Por pitpan

Prophet (3131)

Imagen del pitpan

27-05-2008, 15:06

Ok. Checked! The Speccy-alike version is not that bad. You can all check it here. Please note that "World of Spectrum" is apparently entitled to host these games, therefore linking the playable java version isn't against the MRC policies.

Por jltursan

Prophet (2179)

Imagen del jltursan

27-05-2008, 15:21

Look here for a nice video about the zx's russian port of PoP. It really runs amazingly smooth!

Por Skyblasc

Resident (53)

Imagen del Skyblasc

28-05-2008, 14:26

kpiball from matra

Not Matra, but spanish team Boh-Ken ( some of them now in Kraliceck)

Just pointing that out Tongue

Por ray2day

Champion (455)

Imagen del ray2day

11-09-2010, 01:02

Any updates on this port / project?

Prince of Persia is game I really would like to see work on MSX.

(I googled on it, therefore I hit this old MRC forum subject)

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