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Search: Posts Made By: frank_b
Forum: Coders. Asm / Hardware 11 April 2019, 15:58
Replies: 20
Views: 2,593
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: 59
Views: 3,834
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: 2,376
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: 473
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: 473
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: 8,916
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: 8,916
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: 8,916
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: 8,916
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: 8,916
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: 8,916
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: 8,916
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: 8,916
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: 8,916
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: 1,971
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...
Forum: New to Emulation or Amiga scene 05 January 2019, 10:45
Replies: 26
Views: 1,971
Posted By frank_b
Ugh. Please don't gotek a 1k! It would make a...

Ugh. Please don't gotek a 1k! It would make a mess of the case. Here's a better idea. Get an ACA 500 plus and add a gotek to an external drive. You can swap the internal for external drive...
Forum: support.Hardware 25 December 2018, 13:43
Replies: 21
Views: 5,709
Posted By frank_b
I thought that using a PCL compatible driver on...

I thought that using a PCL compatible driver on the Amiga (HP etc) and redirecting to a file, would give me something I could convert to PDF on a modern system. Nothing recognises the Amiga captured...
Forum: support.Apps 19 December 2018, 12:06
Replies: 3
Views: 444
Posted By frank_b
Thanks. Sadly cmd to a file also crashes with...

Thanks. Sadly cmd to a file also crashes with the postscript printer driver.
Forum: support.Apps 19 December 2018, 09:50
Replies: 3
Views: 444
Posted By frank_b
It crashes on the postscript driver (old 3.1...

It crashes on the postscript driver (old 3.1 icon) but works with the HP drivers. Has anyone managed to get postscript to work with the printtofile.device?
Forum: support.Apps 17 December 2018, 23:18
Replies: 3
Views: 444
Posted By frank_b
printtofile.device crashing immediately on 3.5

Hi. I'm seeing instant crashes when I try and print to a postscript file using printtofile.device on 3.5

Are there any known issues with it? It's crashing on everything I've tried so far.
Forum: Coders. Asm / Hardware 04 December 2018, 07:29
Replies: 7
Views: 846
Posted By frank_b
I have a yankee a1k which doesn't support EHB...

I have a yankee a1k which doesn't support EHB too. It's from 1985 according to the sticker on the back. My PAL 1k supports EHB.
Forum: Coders. AMOS 02 December 2018, 19:17
Replies: 6
Views: 1,666
Posted By frank_b
To put a one line sprite (4 colours 16 wide) on...

To put a one line sprite (4 colours 16 wide) on the screen takes four dma ticks. Per line it is two.. there's 2 needed for the positioning IIRC.
To put it there via the blitter it takes something...
Forum: Coders. Asm / Hardware 01 December 2018, 23:57
Replies: 1,000
Views: 42,797
Posted By frank_b
All the FP primitives are much much faster. ...

All the FP primitives are much much faster. Something like 4x on the 040 at the same clock. I have an 040 based Amiga btw. 40 mhz 040 blizzard. They weren't rare.
Forum: Amiga scene 28 November 2018, 08:19
Replies: 94
Views: 4,951
Posted By frank_b
It doesn't lie with "next gen" systems with 2004...

It doesn't lie with "next gen" systems with 2004 PDA performance at workstation prices.
Forum: Retrogaming General Discussion 27 November 2018, 07:30
Replies: 74
Views: 10,659
Posted By frank_b
Indeed :)

Indeed :)
Forum: Retrogaming General Discussion 26 November 2018, 19:57
Replies: 74
Views: 10,659
Posted By frank_b
https://www.youtube.com/watch?v=2-Xmvj6Q-N4&featur...

https://www.youtube.com/watch?v=2-Xmvj6Q-N4&feature=youtu.be doesn't look or sound too shabby.
Forum: News 21 November 2018, 07:06
Replies: 412
Views: 49,109
Posted By frank_b
I'd love a 1k one!

I'd love a 1k one!
Forum: Coders. Asm / Hardware 17 November 2018, 16:55
Replies: 1,000
Views: 42,797
Posted By frank_b
Hmm.. maybe the 20% increase was with 4 planes...

Hmm.. maybe the 20% increase was with 4 planes active. I did see a difference between running the code from fast RAM and from chip. I'll have a dig about my 1k drive and see if I can find it later...
Forum: Coders. Asm / Hardware 17 November 2018, 08:57
Replies: 1,000
Views: 42,797
Posted By frank_b
About 20% IIRC. It was a regular fast RAM card....

About 20% IIRC. It was a regular fast RAM card. Nothing fancy.
Forum: Coders. Asm / Hardware 17 November 2018, 08:47
Replies: 1,000
Views: 42,797
Posted By frank_b
Code containing nothing but shifts and branches...

Code containing nothing but shifts and branches executes faster from fast RAM. Even if all bitplanes are switched off. I believe I tested this on an NTSC Amiga 1000 a year or so ago.
Forum: Coders. Asm / Hardware 16 November 2018, 11:53
Replies: 1,000
Views: 42,797
Posted By frank_b
Let's just agree that the ST/Amiga would handily...

Let's just agree that the ST/Amiga would handily outrun an 8086 at the same clock :)
Forum: Coders. Asm / Hardware 16 November 2018, 07:12
Replies: 1,000
Views: 42,797
Posted By frank_b
Don't forget that cycle counting only happens on...

Don't forget that cycle counting only happens on ST RAM/Chip RAM. ROM access is not affected on either machine. Branches and shifts tend to be faster than in chip RAM. Even for <4 planes.
Forum: Coders. Asm / Hardware 15 November 2018, 21:19
Replies: 1,000
Views: 42,797
Posted By frank_b
Indeed it is possible that the prefetch will...

Indeed it is possible that the prefetch will stall the CPU whilst waiting for main memory to fetch opcodes.

I rewrote that for you to match what is said in the Abrash book.
Add the best and worst...
Forum: Coders. Asm / Hardware 14 November 2018, 23:38
Replies: 1,000
Views: 42,797
Posted By frank_b
Only impressive if you forget about the cost of...

Only impressive if you forget about the cost of filling the prefetch buffer. The 8086 and 8088 are much slower than they appear to be from Intel's documentation. At least according to the Zen of...
Forum: Coders. Asm / Hardware 14 November 2018, 16:28
Replies: 1,000
Views: 42,797
Posted By frank_b
Do your 8086 timings take into account memory...

Do your 8086 timings take into account memory accesses during prefetch?
Every opcode fetch is going to cost cycles.
Can you please add best case/worst case columns for 8086.
Forum: Retrogaming General Discussion 11 November 2018, 14:00
Replies: 20
Views: 1,290
Posted By frank_b
Bigger blits were possible on ECS. Separate width...

Bigger blits were possible on ECS. Separate width and height values. Borderblank was another edition. I don’t think anything would have been used in games. Perhaps extra chip memory?
Forum: Coders. Asm / Hardware 05 November 2018, 06:24
Replies: 1,000
Views: 42,797
Posted By frank_b
There's another interesting article earlier on in...

There's another interesting article earlier on in that issue. A system designer discounting the 286 out of hand because it's "at least a generation behind the 68000".
Forum: Amiga scene 31 October 2018, 07:32
Replies: 823
Views: 70,510
Posted By frank_b
Can't we just have a kickstarter and buy them all...

Can't we just have a kickstarter and buy them all out? They must be worth pennies these days. Buy them out and open source the lot.
Forum: support.Other 06 October 2018, 10:03
Replies: 7
Views: 837
Posted By frank_b
You should be able to use easyadf from amiga kit...

You should be able to use easyadf from amiga kit and cross dos on your 1200 for this. :)
Forum: Retrogaming General Discussion 28 September 2018, 11:20
Replies: 152
Views: 10,337
Posted By frank_b
No. Certainly not. It is nowhere near as elegant...

No. Certainly not. It is nowhere near as elegant as the original design. Everything extra s compromised. The sprites can't be reloaded as there's no DMA register for the extra control words. You...
Showing results 1 to 40 of 441

 
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