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- Path: sparky!uunet!cbmvax!cbmehq!cbmger!imart.adsp.sub.org!incubus.adsp.sub.org!long
- From: long@incubus.adsp.sub.org (Joerg Meenen)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: A4000, really?
- Message-ID: <long.0ivg@incubus.adsp.sub.org>
- Date: 4 Sep 92 03:34:46 GMT
- Organization: ImageArts/Amtek
- Lines: 86
-
- hi brian
- you asked for information on the new amigas? here you are ...
- i found this article in the "incubus" bbs in germany.
-
- I've been chomping at the bit to speak out and right now I just don't
- care about the non-disclosure agreements. We have been beta-testing
- the A4000 and another model which may be called the A1000 Classic,
- A800, or possibly some other name. Both are based on the AA chipset and should be able to hold their own against other machines on the
- market, but there are still a few areas where they are lacking. The A4000 is pretty much an A3000 with an 040 on the motherboard, the
- AA chipset instead of the ECS, and beta 2.1 ROMS. Ours has 16M fast
- RAM and 4M chip, expandable to 64M and 16M respectively. ZIP RAM like
- that in the A3000 is used, but there is a chance that production
- machines will go to SIMMS. Our machine has a 105M Quantum hard drive
- and a true full- speed high-density floppy. The expansion slots are
- Zorro III and appear to be identical to those on the A3000. I am not
- positive, but the cpu slot looks to be the same as the one found on
- the A3000.The other machine is housed in pizza-box style case 3" high and 15"
- wide and deep. It has a 16MHz 030, the AA chipset, 2.1 ROMS, and
- sockets for up to 16M fast RAM and 4M chip RAM. It has the same
- floppy drive as the A4000, but the hard drive is only a 52M Quantum.There is a daughterboard with two Zorro III slots and one inline video
- slot, but it looks to be very cramped in there. The cpu slot is in
- the same orientation as that of the A3000 and A4000, but there is not
- much clearance. It is a very nice compact package and manages to look
- even "sexier" than the A3000/A4000.
- Both machines sport the same I/O ports, starting with the same ports
- found on the A3000. SCSI and parallel ports, as are the RGBA, VGA,
- and audio ports. There is a microphone port that works with the built-
- in digitizer, with 8bit 22kHz sampling possible. Not exactly CD
- quality, but better than the toy CODEC samplers found on the NeXT,machine, with the joystick ports stacked vertically. This stacking
- leaves just enough room for a pair of MIDI ports and another port that
- was covered with a plastic cap on both of our units. We pried it off
- and it looks like a PCMIA slot, but we've not been able to confirm
- this. Given that the A600 has one, this would not be a bad idea,
- but it seems odd that it was covered up like that.
- The new mouse looks to be the same as the pregnant mouse, but the
- A3000 came with a three button and the other machine a two button.
- Both had standard A3000 keyboards. ike existing Amigas instead of a
- new breed. The most shocking thing about
- these machines is how much they feel like existing Amigas instead of a
- new breed.
- The AA chipset is a real improvement over the ECS, but it may not be
- enough to keep the Amiga competitive for another 7 years. Some of the
- chips are similar to those in the ECS, but none look to be drop-in
- replacements for existing machines. Agnus, Denise, and Paula have
- been improved and all three are now surface mount chips roughly the
- size of the fat Agnus. There are three other chips that have tape
- covering the names, but one of them is certainly an Amber type de-
- interlacer chip. It has what 1M of VRAM in order to handle the
- increased color depths and de-interlaces all but the highest
- resolution modes. We peeled back the tape a bit on the other two
- and one is named Lisa, the other was just a number. The Lisa chip
- appears to be responsible for the graphics, but its relationship with
- Agnus and Denise is not so clear. The other chip may be the rumored
- DSP chip, but none of the software we have mentions it specifically.There is an A/D chip for the microphone and two D/A chips for the
- audio in the same general area, so they are probably related.
- Amiga owners will be surprised at some of the features of the AA
- chipset and disappointed with others. The resolutions supported are
- similar to those of the ECS, with the addition of the 800x300, 800x600
- interlaced, 1280x480, and 1280x960 interlaced. The Amber de-
- interlacer works with all of the modes, but most SVGA monitors can't
- handle the non-interlaced 1280x960 mode. All modes can be up to 8
- bitplanes except for the 1280 modes, which are limited to six. The
- palette is 24 bit, but there is a way to simulate 12 bit for compatibility with some older software. A pleasant surprise is the
- SuperHAM mode which uses 10 bits to allow for pseudo-24 bit color.
- This works in the 320 and 640 modes and is nothing short of
- spectacular, with the bonus of being able to handle up to 30fps for
- some amazing animation. The 800 and 1280 modes have 8 bit 256k color
- and 6 bit 4096 color HAM modes, respectively. There is still a
- problem with fringing on raw images, but the better programs seem to
- do a pretty good job with reducing the problem. The sprites now
- change to match the resolution of the screen, so pointers look much
- more professional. They may be up to 64 pixels wide, with no height
- limitation. There are still only eight per scanline, but the number
- of colors is up to 16 in all modes except for 1280, which is onlyfour. All in all, these Amigas have graphics that hold their own
- against offerings for the PC and Mac, but they won't be able to last
- for another seven years without improvement.
-
- ... so far.
- i am not sure, but i think a guy called daniel drum posted this arrticle.
- thanx daniel.
-
- bye and prost.
-
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- Write to: fido@vax.rz.uni-wuerzburg.dbp.de
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