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#881 | ||
HOL/FTP busy bee
Join Date: Sep 2006
Location: Germany
Age: 46
Posts: 32,176
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#882 |
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Join Date: Feb 2015
Location: Sweden
Age: 50
Posts: 2,993
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Commodore did put the CPU in the 040 on a separate card. So they could have done a similar variant with the 1200? Base model would have tve 020 with unpopulated SIM slot. Then they would offer variants with 28MHz 020 (or maybe the 25MHz 030 they purchased in some volume for the A4000/030 anyway), and a handful of different configs with 1/2/4MB FastRAM, HDDs etc..
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#883 | |
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Join Date: May 2017
Location: Munich/Bavaria
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in a mid-range AA1000 this would be a faster CPU (030), 1 MB FastRAM, only one ZorroIII on the board to take an option doughter board) the A1400 with 020 and some FastRAM the A1200 as it were All of them sharing the exact same AGA base board, from wedge to tower. As soon as Akiko or AA+ are released, users can upgrade this base-board. (living the DSP discussion aside) |
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#884 | |
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Join Date: Apr 2017
Location: France
Posts: 664
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But for the additional SIM slots I'm on the same opinion. However we add a discussion about it and it require some additional logic not present on the A1200 motherboard and so, some more cost. In addition, it conflict (electronically) with doing trapdoor memory expansion cards. For me, the inexcusable criticism I have, is for Commodore not providing official memory expansion card from day 1. After all the discussions, the idea was emitted to put the cpu in the trapdoor so it can be changed. |
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#885 | |
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Join Date: Aug 2013
Location: Marseille / France
Posts: 1,523
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Here we have a "something in the $1000 range". Well not exactly since this is in british pounds. ![]() Note that they are specifically speakîng of bridging the gap between the A1200 AD the A4000/040. And look at the captions of the picture. Mid range computer Indeed ! ![]() Last edited by sokolovic; 02 June 2024 at 23:56. |
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#886 |
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Join Date: Feb 2015
Location: Sweden
Age: 50
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£999 in 1993 is about £2080 in today's GBP The exchange rate between GBP and USD at the time of writing is about 1.27, however on March 24th 1993, the exchange rate was 1.48, so £999 was $1478 and £1099 (for the larger HDD version) was $1626 And in today's money, that would mean ~$3200 and ~$3525 today Inflation for UK & US from 1993 to today is in the same ballpark.. |
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#887 | |
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Join Date: Mar 2018
Location: Hastings, New Zealand
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1. The A1200 was a low-end system. Commodore had never produced a FastRAM board to go with a low-end system on launch. The A1000 never got one. The A500 only got it with the A590, released 2 years later. The CDTV and A600 never got FastRAM. So not providing a FastRAM board for the A1200 was both consistent and expected. 2. Commodore made trapdoor expansions for the A1000, A500, A500 Plus and A600, but in all cases 3rd party manufacturers were soon making them cheaper. 3rd parties were making FastRAM boards too, so could quickly develop A1200 boards. Commodore wouldn't be able to compete against them for long. The Microbotics MBX1200 was out in March 1993. The Amitek Hawk (also released in 1993) cost only £99 with a 1MB SIMM installed. 3. Due to ongoing financial difficulties, Commodore was struggling just to get the A1200 itself out in quantity. Any additions would have to wait until they had the cash to afford it (many suppliers were insisting on payment up-front, so they couldn't 'buy now, pay later'). 4. The A1200 was already more than twice as fast as the A500. If that wasn't good enough for you... Amiga fans who didn't think a stock a A1200 was good enough were generally looking at accelerator cards because even with FastRAM the A1200 wouldn't satisfy them. GVP (owned by former Commodore engineer Gerard Bucas) had a 40MHz 030 card out in March 1993. |
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#888 |
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Join Date: May 2017
Location: Munich/Bavaria
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#889 | |
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Join Date: May 2018
Location: Ireland
Posts: 697
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The blitter and Paula should have been 32bit, even if released after the A1200 the motherboard should have had 32bit access to allow 32bit blitter and Paula to be swapped in later. Commodore should have focused on getting all AGA chips with 32bit access as a priority than wasting time/effort on AAA, I.e. provide a short stepping stone than a huge jump to AAA. As mentioned several times in this thread but AGA should have been sooner in later 1989. Wasn't there something in CU Amiga or Amiga Format that Commodore lost the schematics for the OCS chipset and having to reverse Engineer same!!! |
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#890 | |
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Join Date: Mar 2018
Location: Hastings, New Zealand
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BTW Moore's law relates transistor density, not computing power. CPU... number of transistors 68000 68,000 68020 200,000 (68k x 2.9) 68030 273,000 (68k x 4.0) 68040 1,200,000 (68k x 18) 68060 2,500,000 (68k x 37) So you are saying the A1200 should have had a 68040 in it? Well it did - except that model was called the A4000. For Moore's law we should consider the total number of transistors in the machine. I'm not sure about the AGA chipset etc., but the A1200 came with 2MB RAM (~17 million transistors) compared to 256kB in the A1000 - which is a little over 8 times more. Looks like the A1200 tracked Moore's law pretty well! |
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#891 | |||
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The engineers must have been confident that they had enough info because sample 'hi-res' chips were expected in May and production units in July 1987. However due to compatibility issues it still wasn't ready in September. In the mean time IBM had released VGA, and the engineers were concerned that a monochrome hi-res display wasn't going to be enough. They were right, but their efforts to improve the existing design were not sufficient. At that point they should have scrapped it and started a new initiative to deal with the VGA threat. But engineers working on the hi-res chipset wanted to just tweak it to get a few more colors. That is how we ended up with ECS. This was a big mistake, and it was all on the engineers. Problem is the A500 had just been released and the path it would take was not clear to them. They thought the Amiga needed to compete with workstations and business computers, not games machines. They also didn't seem to appreciate the issues with displaying both 15kHz and 31kHz screens on the same monitor. For flicker-free hi-res a scan converter could do the job until the chipset could be made fast enough to do everything at VGA scan rates. That's what Hedley Davis proposed, and what the A3000 got (Amber). By the time they got the A3000 out the market had already found a solution with 'flicker fixers' for both the A2000 and A500. ECS hi-res was therefore redundant - a complete waste of time. The engineers should have forgotten about putting hi-res in ECS, and instead concentrated on getting 256 color chunky pixel lo-res into the chipset. But they didn't because they weren't in touch with what most fans wanted - better games, not boring productivity stuff! |
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#892 |
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Join Date: Sep 2013
Location: Poland
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Of course Moore's law relates to transistor density. It is supposed to DOUBLE each 24 months. Which - if followed - would result (assuming we ignore A1000 completely) 030-based amiga home computers in 91. One year before Falcon. And not to mention serious improvements to chipset. And obviously that 2MB chipram as well. Instead the only home computer presented by Commodore in '91 was A500Plus soon replaced by A600 and then A1200 at the very end of '92. That's exactly what happens when the price is your only concern... you fall behind.
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#893 | |
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Location: Marseille / France
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#894 | ||
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Join Date: May 2017
Location: Munich/Bavaria
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I knew this would come, that's why I included the Atari ST in the comparison.
Commodore wanted to position the A1000 clearly above the C128, which is part of the price tag it got initially. Quote:
Higher transistor density also means finer structures, witch means faster gates, which again means faster clock rates (at least in that time period) Quote:
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#895 | |
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Join Date: Feb 2015
Location: Sweden
Age: 50
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What spec would the A1200 had launched with if it was up to YOU
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Doubling bandwidth, clockspeed, making sure memory subsystem wasnt a bottleneck. Stuff like that doesnt take 3, 4 or 5 years to do. Full 32-bit AGA should have been possible for A3000. |
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