Amiga Mysteries ?

turrican3 · 10 May 2019, 01:59

Hi guys,
does it still some mysteries about the amiga ??
About his history
Some demo or games effects ??
Or else ??
Please share with things which still a mystery for you.

NorthWay · 10 May 2019, 16:16

Los Gatos "Ranger" updated chipset. Some say it never was, Jay Miner said something else.
ECS UHRES(VRAM?) support in the register list. (Is this the Ranger stuff?)
AAA chipset - any hw design files preserved? Anything hw related preserved from C=?
3000+ DSP - were any built? Tested? Is there any code to support it?
Hacker versions of A1000 Kickstart disks. I have a demo that doesn't exit but talks about a patched version - I wonder if it went on to load up and start KS?
Floppy formats with non-MFM decodings. (I have tried looking at it myself. I think some games used it.)

Leffmann · 10 May 2019, 17:31

Why does the Blitter use this odd symmetry for the octants in line-drawing mode? And why doesn't the HWRM explain clearly that it's a hardware implementation of the Bresenham line-drawing algorithm?

I'm guessing that HW implementations of Bresenham were patented back in those days, they (or Jay Miner) weren't interested in licensing or paying royalties, and this way they could avoid getting sued. But with Jay Miner gone we may never know.

kamelito · 10 May 2019, 22:05

Line drawing was a late addition to the chipset. The idea is from Dale Luck and he pushed hard Jay to do it. Dale is still around.

10 May 2019, 01:59	#1
turrican3 Moon 1969 = amiga 1985 Join Date: Apr 2007 Location: belgium Age: 48 Posts: 3,913	Amiga Mysteries ? Hi guys, does it still some mysteries about the amiga ?? About his history Some demo or games effects ?? Or else ?? Please share with things which still a mystery for you.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Some mysteries I noticed from WinUAE	Leandro Jardim	support.WinUAE	1	17 October 2011 19:48
Solve a couple of Wizkid mysteries if possible?	MethodGit	support.Games	3	18 March 2006 05:28

10 May 2019, 16:16	#2
NorthWay Registered User Join Date: May 2013 Location: Grimstad / Norway Posts: 839	Los Gatos "Ranger" updated chipset. Some say it never was, Jay Miner said something else. ECS UHRES(VRAM?) support in the register list. (Is this the Ranger stuff?) AAA chipset - any hw design files preserved? Anything hw related preserved from C=? 3000+ DSP - were any built? Tested? Is there any code to support it? Hacker versions of A1000 Kickstart disks. I have a demo that doesn't exit but talks about a patched version - I wonder if it went on to load up and start KS? Floppy formats with non-MFM decodings. (I have tried looking at it myself. I think some games used it.)

10 May 2019, 17:31	#3
Leffmann Join Date: Jul 2008 Location: Sweden Posts: 2,269	Why does the Blitter use this odd symmetry for the octants in line-drawing mode? And why doesn't the HWRM explain clearly that it's a hardware implementation of the Bresenham line-drawing algorithm? I'm guessing that HW implementations of Bresenham were patented back in those days, they (or Jay Miner) weren't interested in licensing or paying royalties, and this way they could avoid getting sued. But with Jay Miner gone we may never know.

10 May 2019, 22:05	#4
kamelito Zone Friend Join Date: May 2006 Location: France Posts: 1,801	Line drawing was a late addition to the chipset. The idea is from Dale Luck and he pushed hard Jay to do it. Dale is still around.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)