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Amiga Hardware Issues and discussion / How to read SFS format CF card in macOS
« Last post by AmigaBruno on March 28, 2024, 02:48:44 PM »
As  posted in another thread I'm trying to install a driver for an Aiptek Hyperpen 6000 graphics tablet. Unfortunately, one problem doing this is that I can't read or write either of two CF cards on my MacBook and I can't currently copy the driver using a FAT32 CF card either.

The two CF cards I've got are in different formats. One is in SFS format and was installed by me in 2015 after buying it formatted from Amigakit. I know I used Linux to install Workbench 3.0 and lots of other software onto it, but now I can't remember what I did and I haven't got a computer running Linux at the moment. The other card is in the PFS3 format, but I bought it containing lots of software from a well known seller on eBay.

How can I set up my MacBook, which is now running macOS Ventura and may soon by running Sonoma, to read the SFS format CF card? So far, I've installed FS-UAE, then copied the SFS filing system file into the Workbench 3.0 Boot floppy disk L directory, but it still won't detect the CF card.


2
Amiga Hardware Issues and discussion / Amiga games, joystic control issues
« Last post by tonyvdb on March 28, 2024, 02:19:45 PM »
Hi Everyone, it been a long time since Ive posted anything here but I am hoping that someone can help me. I have a few games (Morph, Tetrix and Deluxe Gallega) for example that when trying to play, the game does not respond to the joystick commands properly or nothing at all happens. The joystic works on other games. This is consistent between both my A4000 and my A2000HD so could this be a problem with the game its self as in corrupt or missing something?

Thanks for your help
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Amiga Magazines / Old Amiga Future Issue 142 in german & english now online
« Last post by AndreasM on March 28, 2024, 02:12:58 PM »
Since today you can read the Amiga Future issue 142 online on our webpage.

In irregular intervals we provide older issues of the Amiga Future for free online.

The magazines and the PDF versions (in HQ) are also available in our online shop

Read the german mags online: https://www.amigafuture.de/app.php/kb/index?c=10
Read the english mags online: https://www.amigafuture.de/app.php/kb/index?c=65

http://25.amigafuture.de
https://www.amigafuture.de
https://www.amigashop.org
http://www.apc-tcp.de
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@AmigaBruno

It's called Mixel's Lab on Discord. Good luck with the CF card stuff.

Unfortunately, although I'm now back on Discord, there's no sign of Mixel's Lab! I've also searched for just Mixel, Myxel, as well as just Amiga and just artwork. No trace of him! I wonder where he's hiding?
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Amiga Hardware Issues and discussion / VERY Slow boot, with GVP HD8+ SCSI Sidecar
« Last post by Retronaut on March 28, 2024, 01:53:34 PM »
Hey, I have installed a GVP HD8+ SCSI hard disk controller with my (1MB Chip) Amiga500. The GVP unit has 8mb of Fast RAM installed, and is using a ZuluSCSI as the drive.

I know SCSI 1 and an 68000 are not super fast, but with this device and a ZuluSCSI, it takes 2 minutes to boot into OS 3.2!

Is this normal? An issue with OS 3.2 maybe, is this in any way bloaty? Aimed more at a 68020+ machine?

I have watched a BlueSCSI on the same controller, and it literally appears to do NOTHING for the first minute of the boot. There is a flutter of HD activity when switched on, then nothing. Then around the 1 minute mark it springs into life and starts booting. Roughly 20 seconds before it boots it seems to stop again, waits for 15 seconds and then a small 5 second flurry and Workbench appears.

Anyone with any good tips as to how to configure this machine better?

Any help appreciated
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Amiga Marketplace / Re: 5 Amiga books for sale U.S
« Last post by Pyromania on March 28, 2024, 10:18:03 AM »
Sent!
7
Hi there!

Folks in MontrĂ©al are organising a Summer School on retro-development, with a special focus on the Amiga!  8)

"A summer school dedicated to retro gaming, which invites both humanities and engineering to provide unique insights on retro gaming, both theoretical and practical, and opportunities for cross-fertilization among research fields. Supported by the ACM SIGSOFT."  :D

Check it out!
Tygre
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It was ages that I intended to dig up some 20+ years old code and use it to play with PED81C a little more. Finally I got around to do it and came up with a new test program called Zoomaniac.
Details in the video and in the manual excerpt below. Download available at https://retream.itch.io/ped81c.

https://www.youtube.com/watch?v=eehqapb20fE

Code: [Select]
--------------------------------------------------------------------------------
OVERVIEW

Zoomaniac has been written to evaluate the performance on a stock Amiga 1200 of
a general-purpose texture scaling routine that writes directly to a PED81C
raster.


--------------------------------------------------------------------------------
PERFORMANCE

The following results are relative to the full screen effect that zooms the
cosmonaut in and out.

On a stock Amiga 1200, the execution speed is between 25 and 26 fps. If the
staggered lines are turned on, the performance drops by about 1 fps (which was
unexpected, since all that such option adds is a Copper WAIT and a Copper MOVE
for each rasterline).
Given that the DMA load caused by PED81C is "double" (see its documentation for
the details), a version that uses only half the number (2) of bitplanes has been
made to check the performance as if the Amiga had a native chunky video mode.
Surprisingly, the performance did not improve at all: relatively to the CHIP bus
access, the scaling code must interleave so nicely with the bitplane data
fetches that having more bus cycles available does not make any/much difference.

An Amiga 1200 equipped with a 68030 clocked at 50 MHz and 60 ns FAST RAM easily
performs at steady 50 fps. To find out the maximum performance, new tests were
made with special versions of the program that had the video synchronization
code disabled.
The speed when running the program normally was between 77 and 78 fps. The
staggered lines option lowered the fps by about 2. The 2 bitplanes versions
performed better, reaching 80-81 fps or, with the staggered lines on, 79-80 fps.
Like on the stock Amiga 1200, the extended Copperlist that implements the
staggered lines causes a small and similar performance drop. Instead, the
halving of the bitplanes DMA load did produce a speed increase.

The following table sums up the results.

S = stock Amiga 1200
E = Amiga 1200 68030 @50 MHz / 60 ns FAST RAM (Blizzard 1230 IV)
2 = 2 bitplanes on
4 = 4 bitplanes on
L = staggered lines on

  |     4 |     L4 |     2 |    L2
--+-------+--------+-------+-------
S | 25-65 |  24-25 | 25-26 | 24-25
E | 77-78 |  75-76 | 80-81 | 79-80

Notes:
 * when FAST RAM is detected, an alternative and more suitable scaling routine
   is used (although writes still happen to CHIP RAM);
 * on (some?) machines equipped with FAST RAM an even faster strategy would be
   rendering to FAST RAM and then simply copying at the maximum speed the
   rendered frame to the CHIP RAM raster.


--------------------------------------------------------------------------------
TECHNICAL NOTES

* The scaling routine fits any rectangle from a texture into a rectangle of any
  size and ratio of another texture with nearest-neighbor matching.
* Logic and rendering are totally asynchronous: the logic runs always at 50 Hz
  and the rendering never stops (unless it reaches the limit of 50 fps, imposed
  by the display refresh rate), thus exploiting the machine's full potential.
* The screen buffering employs three buffers in CHIP RAM.
* The screen resolution is 1020x256 SHRES pixels, which correspond to 255x256
  LORES-sized physical dots and to 128x256 logical dots.
* The code is 100% assembly.
* The program takes over the system entirely and returns to AmigaOS cleanly.

CHANGELOG

March 27, 2024
* Added the Zoomaniac demo.
* [PED81C Voxel Engine] Made a couple of minor changes.
* [PED81C Voxel Engine] Updated documentation.

January 1, 2024
* Rebuilt demos against latest custom framework.
* [PED81C Voxel Engine] Optimized slightly background rendering.
* [PED81C Voxel Engine] Corrected benchmark fps calculation (312 rasterlines were considered instead of 313).
* [PED81C Voxel Engine] Built against latest custom framework.
* [PED81C Voxel Engine] Updated, extended and fixed documentation.
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Miscellaneous / Re: AMIGA.org Server Outage
« Last post by BozzerBigD on March 27, 2024, 04:50:48 PM »
@F0LLETT

Take a compliment when it's offered. As an aside, I am happy with THEA500 Mini but again I think it's only right to wish you every success with your A600GS launch. Much love!
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Another World Beast & Slug Budget Cutscene - Original VS Fan Made Version

How iconic was the beast chase scene in Another World!? Plus, the infamous alien slugs? Well, to honour Another World, I have recreated the opening level on a budget! Imagine sock puppet slugs, terrible acting and Lego stop motion animation. Yup, its as bad as you can imagine!

https://www.youtube.com/watch?v=WNR6bKU1ER0
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