lee@sed170.HAC.COM (John Lee ) (12/21/88)
In article <Dec.18.20.41.17.1988.3235@topaz.rutgers.edu> armhold@topaz.rutgers.edu (George Armhold) writes: >Would someone please tell me what on Earth a B2000 is?? > | > ??? >-GEA Certainly. Most simply, a B2000 is a later production Amiga 2000. An earlier model of the Amiga 2000, called the A2000, was very little more than a repackaged A1000 with Kickstart ROM, a CPU slot, and ZorroII and IBM slots. The B2000 added the RT clock, video slot, improved CPU slot, BUSTER chip, heftier power supply, and some other design changes. As far as I know only the early Amiga 2000's were A2000's while the vast majority are B2000's (as the current production models are.) I believe that the A2000 is the German design while the B2000 is the US design. Software-wise, they are identical to each other as they are identical to the A1000. This is off the top of my head, so really a C-A person should verify all this. ------------------------------------------------------------------------------- Raining CATS and DOGS? Join the RATS: Remote Amiga Teleconferencing System +--------+ John Lee | HUGHES | +--------+ ARPAnet: jhlee@hac2arpa.hac.com Hughes Aircraft Company The above opinions are those of the user and not of those of this machine.
lphillips@lpami.wimsey.bc.ca (Larry Phillips) (12/22/88)
In <268@sed170.HAC.COM>, lee@sed170.HAC.COM (John Lee ) writes: > Certainly. Most simply, a B2000 is a later production Amiga 2000. > An earlier model of the Amiga 2000, called the A2000, was very little more > than a repackaged A1000 with Kickstart ROM, a CPU slot, and ZorroII and IBM > slots. This goes for both the A2000 and B2000 > The B2000 added the RT clock, video slot, improved CPU slot, BUSTER The A2000 has a real time clock. It also has a video slot, but with only one connector. This made for a fun installation of a flickerFixer, the rear edge fingers look a bit like a spider walking on the IC of the motherboard now. :-) > chip, heftier power supply, and some other design changes. As far as I know Don't know about the power supply. The other design changes were that tehy went from a 4 layer motherboard in the A2000 to a 2 layer in the B2000. The second 512K ($C00000) memory on the A2000 was plugged into the CPU slot, and had permanent hardwired wait states, due to some tricky timings when accessing Half-FAST memory 'externally'. The A2000 had no RCA jack for composite video. > only the early Amiga 2000's were A2000's while the vast majority are B2000's > (as the current production models are.) I believe that the A2000 is the > German design while the B2000 is the US design. Software-wise, they are > identical to each other as they are identical to the A1000. > This is off the top of my head, so really a C-A person should verify all > this. You got most of it. I'm still glad I didn't wait until the B2000 came out, even though I am now in need of a trade-in. -larry -- "Intelligent CPU? I thought you said Intel CPU!" -Anonymous IBM designer- +----------------------------------------------------------------------+ | // Larry Phillips | | \X/ lphillips@lpami.wimsey.bc.ca or uunet!van-bc!lpami!lphillips | | COMPUSERVE: 76703,4322 | +----------------------------------------------------------------------+