home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.sys.amiga.hardware
- Path: netnews.upenn.edu!dsinc!scala!news
- From: dave.haynie@scala.com (Dave Haynie)
- Subject: Re: x86 must die it's over-priced junk
- Sender: news@scala.scala.com (Usenet administrator)
- Message-ID: <1996Feb15.172812.7153@scala.scala.com>
- Date: Thu, 15 Feb 1996 17:28:12 GMT
- Reply-To: dave.haynie@scala.com (Dave Haynie)
- References: <Pine.SUN.3.91.960207172950.9405A-100000@pasta> <Pine.BSD/.3.91.960208091306.27921A-100000@ecf2.puc.edu> <4ffc65$26m@teeri.jmp.fi> <Pine.BSD/.3.91.960209134606.1110B-100000@ecf2.puc.edu> <3121B88B.167EB0E7@isy.liu.se>
- Nntp-Posting-Host: gator
- Organization: Scala Computer Television, US Research Center
-
- In <3121B88B.167EB0E7@isy.liu.se>, The Software Guru <y95thosu@isy.liu.se> writes:
-
- >About x86-series. I heard that the original constructors of the 286
- >left Intel because they thought the chip sucked...
- >They went and constructed the Z80 instead :)
-
- Nope. The Z-80 was done years before the 80286. Set the way-back
- machine for the 70s. The microprocessor wars were just kind of
- getting in gear back then. Intel had the 8080 and then 8080A, which
- found their way into a number of early hobbiest computers (such as the
- Altair, the Heath H8, and some others). Motorola also had a
- microprocessor, the 6800, but it was less successful in the hobby
- computer business.
-
- These first hobby computers were expensive and didn't do much. For
- example, you could get the Heath with 4K of RAM and a front-panel hex
- pad for programming, while the Altair used even more primitive
- switches for its front-panel programming. Eventually more memory
- became available, real programs were run, and even some operating
- systems came out.
-
- And the microprocessor was becoming a hot commodity, really before the
- computer quite became "personal", as they were fairly
- expensive. Zilog, Inc. decide that, rather than introduce their own,
- they could clone the 8080 (actually I think it was the 8080A by then)
- instruction set, add extensions, and thus offer a more attractive CPU
- that could take advantage of all the existing 8080 code. I don't know
- offhand if Zilog got Intel engineers or not, but ultimately the Z-80
- took over as the standard CPU for CP/M, the most popular OS for these
- kinds of computers (MS-DOS began life as a knock-off of CP/M for the
- 8086/8088, Intel's first 16-bit microprocessors).
-
- Interestingly, MOS Technology was started by folks who left the 6800
- project at Motorola. While they didn't clone the 6800 instruction set,
- they did clone the 6800 bus interface, so their new 6502 could use
- existing 6800 peripheral chips. And they priced the new micro
- aggressively, which gave it its position as the standard CPU for the
- first generation of home computers (Apple II, VIC-20/C64, Atari
- 400/800, etc.).
-
- Dave Haynie | ex-Commodore Engineering | for DiskSalv 3 &
- Sr. Systems Engineer | Hardwired Media Company | "The Deathbed Vigil"
- Scala Inc., US R&D | Ki No Kawa Aikido | info@iam.com
-
- "Feeling ... Pretty ... Psyched" -R.E.M.
-
-