Bad Apple Amiga Version

[ross]

Well, Superman you are a good testbed

I make a different ADF for you, hoping not to break for others (apparently works for them all).

Toni is testing with a scope, results:
'Normal' NTSC on PAL says 263p and 15.58KHz and 59.27Hz. (Scope shows 59.31Hz)

Here the fake PAL60 generated by ECS/AGA, banging BEAMCON0.
The slow scanning speed is due to the alternating 227/228 cck slots in a line.
So an average of 3546895/227.5=15.59KHz /263=59.28Hz.

This cannot be done on OCS but I can slow down the frequency a bit generating more lines.


EDIT: added ADF and binary for a 263p 59.41Hz screen (h frequency is fixed in OCS, the usual 15.625Khz for PAL)

[Superman]

Originally Posted by ross

Well, Superman you are a good testbed

I make a different ADF for you, hoping not to break for others (apparently works for them all).

Toni is testing with a scope, results:
'Normal' NTSC on PAL says 263p and 15.58KHz and 59.27Hz. (Scope shows 59.31Hz)

Here the fake PAL60 generated by ECS/AGA, banging BEAMCON0.
The slow scanning speed is due to the alternating 227/228 cck slots in a line.
So an average of 3546895/227.5=15.59KHz /263=59.28Hz.

This cannot be done on OCS but I can slow down the frequency a bit generating more lines.


EDIT: added ADF and binary for a 263p 59.41Hz screen (h frequency is fixed in OCS, the usual 15.625Khz for PAL)

All good now for me and my picky monitor

I would suggest everyone else retest with this version to make sure it still works for them.

[ross]

Originally Posted by Superman

All good now for me and my picky monitor

Great

Technicality:
in the video line 262 I change Agnus VHPOSW register making it think it's on the line 312.
So I have to be sure to use Long Frame mode.

I made this choice to have the maximum number of possible usable video lines.
From 26 to 261 (inclusive) then 236.

[chiark]

Want me to check this version too?

[ross]

Originally Posted by chiark

Want me to check this version too?

Yes, thanks.

[Konrad]

Originally Posted by h0ffman

Personally I wouldn't go for a custom disk format. as fun as it might be, you could end up cutting out some of the very limited audience who want to run it on real hardware. they may be a small number but they deserve consideration.

I think I got something wrong here. I thought of a custom disk format in the sense of many nondos games.
Of course it should be a disk format which could be transferred to a real Amiga.

[ross]

Originally Posted by Konrad

I think I got something wrong here. I thought of a custom disk format in the sense of many nondos games.
Of course it should be a disk format which could be transferred to a real Amiga.

Yes, this is the point, a custom format but writable with a real floppy.
I had been very clear on this.

[robinsonb5]

Originally Posted by ross

Yes, this is the point, a custom format but writable with a real floppy.
I had been very clear on this.

Do you know whether your custom format would work with a Gotek? (I haven't been keeping up with which image formats the newer firmware supports.)

[Toni Wilen]

Originally Posted by ross

EDIT: added ADF and binary for a 263p 59.41Hz screen (h frequency is fixed in OCS, the usual 15.625Khz for PAL)

Values confirmed

Also tested: A1000 with PAL Agnus but NTSC crystal: 15.76KHz, 59.93Hz. (Normal mode: 50.35Hz due being weird PAL/NTSC hybrid)

(This does not confirm compatibility with picky monitors. My OSSC in 5x mode + LG TV combination seems to accept almost anything. Which is nice.)

[ross]

Originally Posted by robinsonb5

Do you know whether your custom format would work with a Gotek? (I haven't been keeping up with which image formats the newer firmware supports.)

No idea.
If it support some raw formats, it could be adapted.

Originally Posted by Toni Wilen

Values confirmed

Also tested: A1000 with PAL Agnus but NTSC crystal: 15.76KHz, 59.93Hz. (Normal mode: 50.35Hz due being weird PAL/NTSC hybrid)

(This does not confirm compatibility with picky monitors. My OSSC in 5x mode + LG TV combination seems to accept almost anything. Which is nice.)

[saimon69]

Well right now am training on use AmigaKlang to redo most of the microsamples once base composition is done (then will be a work of copy and paste on milky), and the only thing i cannot optimize too much without losing quality is the rythm base, but hopefully will keep it tight

[chiark]

Originally Posted by ross

Yes, thanks.

Works with my OCS Amiga 1000 with:
- M1764 Multisync (recognises as 60Hz / 15Khz)
- 1084S PAL monitor (just works)
- Scart to HDMI adaptor (recognises as NTSC signal)

[Nightshft]

Picture is stable on
A600+Furia, Samsung LE19R86 LCD TV, connected directly via RGB-Scart

Is testing on ECS ok or is OCS needed?
(could swapt the A600 with an A500 maybe)

Edit:
Tested on A500, same cable, same TV, same stable Picture.

Edit2:
Not sure if picture quality is optimal. See attached pic.

[chiark]

I think I've covered OCS, so I think between us and Superman we've given the Pal60 approach a decent shake down. That was the difficult bit ;-)

Means all that's left to do is optimisation, and the music.

[ross]

Thanks for the tests.

Maybe soon a new teaser with the new encoding.

[Yannick]

Originally Posted by ross

Thanks for the tests.

Maybe soon a new teaser with the new encoding.

May be : [ Show youtube player ]

[ross]

Do you like the Desert Apple?

[indigolemon]

Originally Posted by ross

Do you like the Desert Apple?

It was like a Dream come true

[ross]

Originally Posted by indigolemon

It was like a Dream come true

[chiark]

Looking great, lovely work!