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[...] I spent 10 minutes doing just that, and I can already see that the NMI input is disabled (only pulled up in 'high' state) on schematic 4 : extrait des schémas techniques Hector HRX - page 06.jpg On schematic 6A, named " Comptage Video " you can see it is articulated around a counter which is ...

Une personne utilise l'instruction 'halt' pour se synchroniser avec l'affichage mais ça me semble une utilisation détournée de l'usage de cette instruction qui pourrait avoir des effets de bord. Merci pout ta aide hlide en demander ici a propos de las interruptions sur Hector. noter: une personne =...

At least on Mess I think it is IM 0, that's what gave me the clue to try to use the code setting IM to 1. Yeah, normally the ROM should set IM to 1 explicitely as I believe a true Z80 is using IM 0 by default. But that's weird, the ROM should rely on the right IM to work properly. Regarding screen ...

Ok, you were thinking to use 'halt' as a way to synchronize with V-sync. Using 'halt' for such thing is no a good practice. 'halt' is used to make Z80 to idle until there is a task to do. Not to synchronize. I'm not a Hector specialist so I don't know what the possible interrupt sources are. But th...

Very nice graphics! cool 8) Thank you! Question: why are you using "halt"? what for? There is no explanation, no context. I'm not a specialist regarding Hector, but using 'halt' is a curious thing which should not be usually put in the hands of a "user". As you probably know, you may have different...

While I wait for someone who know about z80 coding on the machine to answer my question above I have been busy with some gfx for the hypothetical game.

Salut a tous, During the last few days I have been doing some Hector Z80 coding. Unfortunately I don't possess the real machine and I have been using the following emulators to check my code: VBHEctor4.1, MESS(MAME) and DcHectorv0.1. I have been coding a sprite engine for a possible game. I have one...

OlivierP a écrit : ↑

15 juin 2018 23:38

is it really on a thomson TO8 ?

Here you are a video of the scroll engine running on my TO8D:
Video

__sam__ a écrit : ↑

16 juin 2018 12:40

This is pretty impressive. I wouldn't believe it was possible to quickly scroll screen on a per-pixel basis. Well done!

Thank you sam, it was a quite interesting exercise in 6809 asm coding

The video at 50 fps Video

Meanwhile I got sidetracked *again* and started one more project. :D This time smooth multi-directional scrolling on the Thomson (TO8/MO6), it can move at one pixel rate or more at 50hz. And the scroll window is not that small 28 bytes by 128 lines. See it in action here: Video The video is just for...

I was not very happy how it was coming along so I have it stalled. Actually I have started many many projects. This is just a hobby and I enjoy starting game projects. It is a hobby after all. But I want to finish these and if I get enough people interested I might finish some of these versions.

Due to some graphical limitations on some platforms like the oric with its serial attributes and the MO5 with two colours per 8x1 attributes it is impossible to get more colours for the sprites or there will occur the famous colour clash. On those machines I am using yellow and cyan on alternate lin...

That's wonderful W_oo_d! The thomson's gfx looks very promising and better than C64 in my opinion. But the Oric's ones are also very nice especially regarding the limitations of the gfx mode on that platform (read here ). By the way, which platform is the most advanced at the moment? The project wa...

Papy.G a écrit : ↑

21 mars 2018 16:10

(...)
Waiting for the graphics appeal on the Alice, but is it for the 4K (TRS-10 clone) or the 32/90 flavor?

Original Alice + 16kb expansion