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Search took 0.10 seconds. Search: Posts Made By: frank_b
Forum: Amiga scene 27 August 2021, 15:15
Replies: 1,550
Views: 422,008
Posted By frank_b
Yup. They both rock. I’m looking forward to...

Yup. They both rock. I’m looking forward to seeing the game on both :)
Forum: Amiga scene 27 August 2021, 14:43
Replies: 1,550
Views: 422,008
Posted By frank_b
Not weak at all, just different. It’s an absolute...

Not weak at all, just different. It’s an absolute beast for masking 32 wide sprites if you use it right. It’s also very fast at bitblit when the ratio of fringe columns to opaque area favours the...
Forum: Amiga scene 25 August 2021, 23:21
Replies: 1,550
Views: 422,008
Posted By frank_b
What kind of blit? How many sources do you use?...

What kind of blit? How many sources do you use? Do you shift a and b? Any constant masks?
If it is a complex use case or takes advantages of pipeline side effects it might not be a good fit for the...
Forum: Amiga scene 25 August 2021, 18:29
Replies: 1,550
Views: 422,008
Posted By frank_b
http://dev-docs.exxoshost.co.uk/BLiTTER_6-17-1987....

http://dev-docs.exxoshost.co.uk/BLiTTER_6-17-1987.pdf is the official reference manual.

The trick anima invented was to do single pass masking with it for fast bobs which should be impossible to...
Forum: Amiga scene 03 July 2021, 08:54
Replies: 8
Views: 1,212
Posted By frank_b
I ;put an aCA 500 plus in my PaL one. Runs the...

I ;put an aCA 500 plus in my PaL one. Runs the cPU at full speed :D Never tried an a1200 accel though as it is so high off the ground. Runs 1.3/2.04 and 3.1 with the cpu at 40 mhz.
Forum: support.Hardware 02 July 2021, 19:51
Replies: 3
Views: 711
Posted By frank_b
Mine does that. It's an Escom model. I leave it...

Mine does that. It's an Escom model. I leave it for 10 minutes and it is fine.
Forum: Retrogaming General Discussion 26 March 2021, 16:39
Replies: 364
Views: 47,698
Posted By frank_b
They couldn’t get Amy working in time. Look up...

They couldn’t get Amy working in time. Look up the specs of that sound chip. It’s absolutely nuts and crazy powerful / unusual. For YM listen to anything from TAO of Cream. Lovely stuff...
Forum: Retrogaming General Discussion 20 January 2021, 18:44
Replies: 57
Views: 8,058
Posted By frank_b
EGA was pretty horrible. Better than CGA but...

EGA was pretty horrible. Better than CGA but that's not saying much. VGA was pretty horrible pre VLB for performance but the colours and palette were decent. I don't think you can compare the Amiga...
Forum: Retrogaming General Discussion 27 December 2020, 22:30
Replies: 56
Views: 7,339
Posted By frank_b
Commodore had been gone for 5 or 6 years before...

Commodore had been gone for 5 or 6 years before the GBA launched. When I worked with the console we had prototype boards and emulators. The machine hadn't launched yet. At the time I thought I'd...
Forum: Retrogaming General Discussion 26 December 2020, 09:47
Replies: 56
Views: 7,339
Posted By frank_b
It's been awhile since I've programmed one but...

It's been awhile since I've programmed one but the GBAs sprite and playfield hardware is amazing for 2d. 128 sprites up to 64 pixels tall and wide. 32 custom rotation and zoom levels which can be...
Forum: Coders. General 22 October 2020, 16:06
Replies: 987
Views: 138,439
Posted By frank_b
Ex professional games developer like me? ;) ...

Ex professional games developer like me? ;) Missed the Amiga though. Started on the GBA.
Forum: Coders. General 22 October 2020, 16:02
Replies: 987
Views: 138,439
Posted By frank_b
Then do it in 32 colour mode and make sure you...

Then do it in 32 colour mode and make sure you only ever write to a zeroed area of the screen :D Would work for some games and it would be really fast. Or just pre calc the sprite / background...
Forum: Coders. General 22 October 2020, 15:52
Replies: 987
Views: 138,439
Posted By frank_b
Yes I know. It would be 7 over 8 in that case....

Yes I know. It would be 7 over 8 in that case. You could also just make sure enemies don't intersect with any tiles for the same effect and do it in whatever mode you wish. Think of a platformer...
Forum: Coders. General 22 October 2020, 15:26
Replies: 987
Views: 138,439
Posted By frank_b
I'd just use a dual playfield display, make sure...

I'd just use a dual playfield display, make sure the enemies don't intersect and do a raw copy instead :D if they need to intersect at 16 pixel boundaries, use an OR instead and have a spare column...
Forum: Coders. General 22 October 2020, 15:09
Replies: 987
Views: 138,439
Posted By frank_b
The second you shift you need to preserve bits in...

The second you shift you need to preserve bits in the destination if the source is aligned :) You could do line by line, use a constant for the mask and achieve something similar with first and last...
Forum: Coders. General 22 October 2020, 14:55
Replies: 987
Views: 138,439
Posted By frank_b
Yes. It has 3 mask registers which preserve bits...

Yes. It has 3 mask registers which preserve bits in the destination rather than 2 for masking off the input on the first and last words on a line. It is used for the first, last and middle lines of a...
Forum: Coders. General 22 October 2020, 14:36
Replies: 987
Views: 138,439
Posted By frank_b
Yes and it is very very fast for most GUI stuff....

Yes and it is very very fast for most GUI stuff. Area filling, window translation. Simpler operations are usually faster than the Amiga's if bits need to be preserved in the destination. Like...
Forum: Nostalgia & memories 11 October 2020, 14:56
Replies: 292
Views: 29,191
Posted By frank_b
Every vintage computer has something interesting...

Every vintage computer has something interesting going for it. c64, spectrum, Atari, Unix workskations etc. Every computer BUT the 80s PC. That's a junker with no redeeming features whatsoever. The...
Forum: New to Emulation or Amiga scene 11 October 2020, 14:40
Replies: 5
Views: 2,008
Posted By frank_b
You can get a flicker fixed display on a 1200 by...

You can get a flicker fixed display on a 1200 by just hooking up to a TV via scart or or a scart to HDMI adaptor to 1080p monitor. Every one I tried would deinterlace at the cost of latency. Ie 25...
Forum: Nostalgia & memories 06 October 2020, 14:26
Replies: 292
Views: 29,191
Posted By frank_b
In a word, everything circa 1985. 1....

In a word, everything circa 1985.

1. Powerful command line vs the monstrosity of MS DOS in design and implementation
2. Flat address space for the CPU vs insane segments/offsets on the 8086
3....
Forum: Nostalgia & memories 27 September 2020, 20:18
Replies: 312
Views: 34,975
Posted By frank_b
Elegant is the best word to describe the Amiga....

Elegant is the best word to describe the Amiga. Anyone that's read the HRM I imagine would agree. Coder's dream.
Forum: Nostalgia & memories 27 September 2020, 16:39
Replies: 312
Views: 34,975
Posted By frank_b
The card specs look impressive. Interfacing to a...

The card specs look impressive. Interfacing to a 24 bit frame buffer over the ISA bus must have been fun though. it's not exactly high performance. It crawls updating a 320*200 8 bpp display. I...
Forum: Retrogaming General Discussion 09 July 2020, 19:01
Replies: 124
Views: 16,194
Posted By frank_b
YM sounds quite good these days with the modern...

YM sounds quite good these days with the modern SID voice/buzzer effects. https://www.youtube.com/watch?v=SWVSbVpEP-8 Lots of good chip music.
I like Paula and the SID too. Pokey always sounds out...
Forum: Retrogaming General Discussion 11 May 2020, 19:17
Replies: 24
Views: 2,722
Posted By frank_b
Yes but it had some serious flaws which impacted...

Yes but it had some serious flaws which impacted usability. No background IO and a non reentrant kernel. Any OS call prevented task switching. They were working on improving it with a reentrant AES...
Forum: Retrogaming General Discussion 11 May 2020, 18:41
Replies: 24
Views: 2,722
Posted By frank_b
According to Wikipedia Magix was out in 1992. ...

According to Wikipedia Magix was out in 1992. Full pre emptive multitasking with a reentrant windowing system, cross platform (later) and background disk IO. Not sure which version supported long...
Forum: Coders. Asm / Hardware 11 April 2019, 15:58
Replies: 20
Views: 5,460
Posted By frank_b
That's wrong. Raw Bitblit performance on the STE...

That's wrong. Raw Bitblit performance on the STE exceeds the TT!
The ST blitter flat out murders the 68k for shifting performance. it's 5.8 - 8x as fast as the VDI.
Forum: Retrogaming General Discussion 10 March 2019, 19:28
Replies: 62
Views: 9,974
Posted By frank_b
For 9 sectors yes. 10 was far more common and 11...

For 9 sectors yes. 10 was far more common and 11 was also possible.
Forum: Nostalgia & memories 25 February 2019, 19:23
Replies: 16
Views: 4,845
Posted By frank_b
The address was different from one of the US...

The address was different from one of the US Amiga boxes I saw. Hopefully it was correct :)
Forum: MarketPlace 12 February 2019, 06:59
Replies: 5
Views: 767
Posted By frank_b
Mine came with dual slot Cflash and an internal 8...

Mine came with dual slot Cflash and an internal 8 meg fast RAM board. The original rrp was $1295 btw according to the sticker on the box. So 1200 is waaaaaaaay too much. The monitor is mono. You...
Forum: MarketPlace 11 February 2019, 21:02
Replies: 5
Views: 767
Posted By frank_b
I tracked down an 85 no EHB NTSC A1000 boxed,...

I tracked down an 85 no EHB NTSC A1000 boxed, with manuals and original amiga monitor in 2016. I paid $250 in the US for it. Including delivery.
Forum: Retrogaming General Discussion 10 February 2019, 18:22
Replies: 147
Views: 18,435
Posted By frank_b
DML is in a league of his own as a coder. He's an...

DML is in a league of his own as a coder. He's an absolute genius. There are probably very few coders as good as he is in the world.
Forum: Retrogaming General Discussion 14 January 2019, 07:01
Replies: 147
Views: 18,435
Posted By frank_b
The 8 bit atari scene is more active than the...

The 8 bit atari scene is more active than the Amiga or the ST.
Forum: Retrogaming General Discussion 13 January 2019, 22:17
Replies: 147
Views: 18,435
Posted By frank_b
Yeah. The bass on the pokey version is out of...

Yeah. The bass on the pokey version is out of tune! That seems to be typical on most tunes that I've heard. The YM is better. You're not getting something like this out of a pokey...
Forum: Retrogaming General Discussion 13 January 2019, 18:42
Replies: 147
Views: 18,435
Posted By frank_b
Crownland on both for comparison. pokey ...

Crownland on both for comparison.

pokey
https://www.youtube.com/watch?v=lRuhcpSvXdk

ym
https://www.youtube.com/watch?v=JCsDcQBFRPs
Forum: Retrogaming General Discussion 13 January 2019, 17:05
Replies: 147
Views: 18,435
Posted By frank_b
Yeah. The AY is at least in key. The Pokey...

Yeah. The AY is at least in key. The Pokey always sounds out of tune to my ears.
Forum: Retrogaming General Discussion 11 January 2019, 14:25
Replies: 147
Views: 18,435
Posted By frank_b
Yes. 6.25, 12.5, 25, and 50 khz stereo and mono....

Yes. 6.25, 12.5, 25, and 50 khz stereo and mono. It has treble, base, volume and stereo panning support and can mix its audio with the YM. It can play a sample from anywhere in the ST RAM range. 4...
Forum: Retrogaming General Discussion 11 January 2019, 14:12
Replies: 147
Views: 18,435
Posted By frank_b
Would also give you more RAM for storing samples....

Would also give you more RAM for storing samples. Only the playback buffer needs to be in chip ram. It's been done in at least one game on the STe. Obsession on the STe uses 4 channel modules for...
Forum: Retrogaming General Discussion 11 January 2019, 09:09
Replies: 147
Views: 18,435
Posted By frank_b
With the lance playback routine it usies 50 khz...

With the lance playback routine it usies 50 khz mixing with 20-25% of the CPU on an 8 mhz 68000. There's supposed to be a trick used with the MC and LMC.
That same routine can apparently do 8 voice...
Forum: Retrogaming General Discussion 10 January 2019, 19:43
Replies: 147
Views: 18,435
Posted By frank_b
I like SID voice YM stuff on the ST. Tao of...

I like SID voice YM stuff on the ST. Tao of cream is an excellent composer.
https://www.youtube.com/watch?v=SWVSbVpEP-8
https://www.youtube.com/watch?v=Kz8KaDHClTA
Good music is good music.
...
Forum: New to Emulation or Amiga scene 05 January 2019, 16:45
Replies: 26
Views: 4,296
Posted By frank_b
I also have a Yankee a1k which I bought in...

I also have a Yankee a1k which I bought in Boston. I’ve not added an aca card to it because it has IDE and a ram expansion on the CPU. I did not have a lot of luck with games. The machine is hard...
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