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#2501 |
This cat is no more
Join Date: Dec 2004
Location: FRANCE
Age: 52
Posts: 8,377
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What, you're calling Thomson TO7 and MO5 (that we had in France) crap?
Well you're right. |
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#2502 | |||
Registered User
Join Date: May 2017
Location: Munich/Bavaria
Posts: 2,426
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They just took a more professional approach. Quote:
the "Reality" coprocessor in the N64 was designed by Silicon Graphics. Later (1999) a large group of important engineers left SGI for Nvidia. So the successor of SGI-technology can now be found in the XBOX, the PS3, and the Nintendo Switch. (and in the PC of course) Quote:
(macOS IS essentially NextStep by just an other name) |
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#2503 | |
Registered User
Join Date: Apr 2017
Location: France
Posts: 654
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I came back on the XOR patent discussion.
This page indicate that Commodore had defaulted on payments. It would mean a deal existed with CadTrack but they stopped paying. Would perhaps explain a bit more why a new deal was not conclude with the complainant. Quote:
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#2504 | ||
Registered User
Join Date: Sep 2013
Location: Poland
Posts: 868
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After 68k IRIS series they went MIPS. And after a while bought MIPS to secure (rather) supply and/(than) development. Basically what Commodore did with MOS. But later on bet on ill-fated itanium. Was MIPS developed poorly? Or was there a problem with professional graphic accelerators ? Who knows. Workstation GPUs were specialized - not by hardware but rather through firmware and drivers. Quadro is basically the same chip as GeForce. Of course CPU performance was still very, very important and I guess at some point lack of progress in MIPS development held them back. But I don't really get it. AFAIK PPC workstations for rendering ended up being much more popular. The exact route H&P and Apple went back then - and at a time that was a good idea. So... A1200 was released in late '92. SGI went MIPS in '92. Apple was exploring RISC since late 80s and made an alliance with IBM (And Motorola) in early 90s. And obviously Commodore did think about that as well with Hombre. Little late but... would PA-RISC be really something affordable? They went for it to be NT compatible ![]() Quote:
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#2505 | |||||
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Join Date: Mar 2018
Location: Hastings, New Zealand
Posts: 2,749
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So what would you gain from an optional 'C64 compatibility' expansion? Existing C64 owners who bought an Amiga could just continue using their old machine for C64 stuff, like owners of other home computers did. Existing Amiga owners who for some peculiar reason decided they wanted to run C64 programs could just buy a C64 (which by that time were dirt cheap). The C64 and Amiga were totally different platforms, only having the manufacturer's name in common. So there wasn't any compatibility to carry over. Fans understood this. They bought an Amiga because they didn't want to run C64 software. Quote:
I do object to the idea though, because it meant continuing down the path of competing against PCs by using a fancy graphics chipset, which was bound to fail. Commodore eventually realized this and was looking at putting PCI slots into future models. They were also looking at going RISC because 68k was going away. Then there were problems with Amiga OS itself. At some point it would have to get a new kernel too, like Windows and Mac OS did - if it was to compete against PCs. Whichever way you look at it, the Amiga as we knew it was coming to the end of the line. It would have been nice to get more A1200s and CD32s though, and perhaps other more advanced (but still 99.9% compatible) models that kept the classic design going a while longer. |
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#2506 | ||||||||
Registered User
Join Date: Sep 2013
Location: Poland
Posts: 868
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#2507 |
Registered User
Join Date: Oct 2009
Location: Salem, OR
Posts: 1,770
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The Apple II card for the early Macs was basically an entire Apple //e on a card.
As far as I know, there wasn't any other good way of running Apple II software on a Mac until software emulators came along and required pretty fast MACs (i.e. PowerPC). I am not aware of any for the 68k based Macs. |
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#2508 |
Registered User
Join Date: Sep 2013
Location: Poland
Posts: 868
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@desiv
Well let's see then. LSI chip handled everything except graphics, ram and cpu itself. RAM and CPU were on board, graphics was handled by software subroutines running on Mac hardware. There was floppy controller on board. IIe card was able to access some peripherals from host machine and part of Mac RAM as well. Now... C64 doesn't have floppy controller - it uses serial communication with DOS on drive itself (which means floppy controller is OUTSIDE). Serial communication - that one Amiga can handle directly and accurately. Now then, what else? Joystick? Yeah, it can pass host machine to emulation software. Keyboard the same. SID? Amiga can emulate it on Paula. Results aren't that good but it still counts. So what we are left with? Well we're left with... 6510, VIC II, PLA and RAM. Or 6502, some PLD as glue logic and software emulation of 6510+pla bank switching. ROM can be uploaded as image in amiga RAM. You might even dump VIC II and emulate it's functionality on host hardware at the cost of lower compatibility. Of course it was fairly possible to put most of C64 internals in a single chip like that LSI for IIe card. It was relatively simple logic (in comparison to e.g. Agnus). Last edited by Promilus; 02 April 2023 at 07:59. |
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#2509 |
Registered User
Join Date: Oct 2009
Location: Salem, OR
Posts: 1,770
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So it was almost all done on the //e card and not by the Mac.
Which is what I was saying. |
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#2510 | |
Registered User
Join Date: Sep 2013
Location: Poland
Posts: 868
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#2511 | |||
Registered User
Join Date: Jan 2019
Location: Germany
Posts: 3,317
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#2512 | |
Registered User
Join Date: Dec 2014
Location: germany
Posts: 439
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The IIe-card had a clear usecase (custom applications for the Apple II, mainly in the educational sector) and a user base that was willing to pay for that (educational institutions). BTW, it was half of the LCs sold to schools that had the IIe card, I guess for other customers the share was far, far smaller. The C64 and its derivatives had only very moderate success in the education sector, so they could not rely on that market. So the IIe card was released much later (1991) than your proposed C64 card (at the Amiga's launch?), could use much advanced technology to emulate a much simpler system (in terms of graphics/sound hardware), and had a clearly defined and financially strong target market. I therefore do not think its success supports your arguments. Last edited by chb; 02 April 2023 at 11:10. |
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#2513 | |||||||
Registered User
Join Date: Sep 2013
Location: Poland
Posts: 868
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@Thomas Richter
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One thing is clear. A1000 came out in 1985. With little amount of software. And rather without spectacular financial results for Commodore. C128 came out in 1985. Was overall bad computer. Most innovations were implemented stupid way (faster CPU with good old VIC II? VDC chip? Faster drive which has to revert to 1541 mode for some games? nearly obsolete Z80?). But it was C128 which did sell well and produced results. Deep down you already know it wasn't healthy situation for Amiga propagation. Quote:
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Last edited by Promilus; 02 April 2023 at 12:01. |
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#2514 | ||
Registered User
Join Date: Apr 2017
Location: France
Posts: 654
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Taking about PC compatibility, the real point which really hurt and was very simple to solve, was the capacity to R/W PC floppies out of the box. CrossDos allowed it later. So you would be able to have graphical clones of DOS office softwares and work with your data indifferently on PC or Amiga. I think a lot of person would move to the new visually appealing platform. It's not dumb characters mode that was needed, nor full PC emulation, it was a bridge with the PC world existing data and it was quiet obvious, even at the time. Quote:
[Edit] And at full 1541 speed because the slowness was due a misconception on the 64 side if I remember well. The C64 full emulation card would have come eventually later. Last edited by TEG; 02 April 2023 at 12:15. |
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#2515 | |
Registered User
Join Date: Jan 2019
Location: Germany
Posts: 3,317
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It wouldn't, because it was irrelevant. C64 compatibility would be just outright stupid. Those that still wanted a C64 would have bought one, and those that did not would not pay extra for such nonsense. It is a completely different architecture - sure, one would have developed a "bridge board" with C64 chips on it, as a second computer within the computer, but apparently, nobody did. Must have had reasons. |
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#2516 | ||||
Registered User
Join Date: Sep 2013
Location: Poland
Posts: 868
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You're missing the point. |
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#2517 | ||
Registered User
Join Date: Jan 2019
Location: Germany
Posts: 3,317
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No, you are. |
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#2518 | |||
Registered User
Join Date: Sep 2013
Location: Poland
Posts: 868
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#2519 | |
Registered User
Join Date: May 2017
Location: Munich/Bavaria
Posts: 2,426
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The resources in developing these would have been better spent in polishing Textcraft and creating "Cellcraft" … essentially a good native office suite. Relying on more or less a whole PC to show the Amiga can do business apps, is only emphasizing on a perceived weakness :-/ An affordable (and optional!) C64-card would have been different, as the advantages of the Amiga over an 8-bit machine were so stark and obvious - it would have clearly been only a tool to ease customer’s transfer to a new platform and showing everyone Commodore cares about compatibility between its product lines and cares about its customers … it would have been good marketing for once Last edited by Gorf; 02 April 2023 at 13:27. |
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#2520 | |
Registered User
Join Date: May 2017
Location: Munich/Bavaria
Posts: 2,426
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A small redesign (one could even argue a simplification) of the VIC-II would do: Stay in the digital realm! At some point in its internal pipeline the VIC-II has a 4-bit value for every pixel. All you need from there are four dual-ported line buffers. From the Amiga-side these buffers look like a small region in ChipRAM (Not entirely unlike what the A314 can do today...) Then you just need to synchronize the Amiga to the VIC-II-timing and point the bitplane-pointers to these buffers. Et voilà! Now you have your C64 output as an 16 colour Amiga LowRes screen .. next to other screens and you can even change the palette! |
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