Talk:DEC Alpha
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[edit] What are those ISA addition letters?
What do the different ISA letters stand for? Also, the entire table could use a chart, for those who might not immediately recognize that "BSide" equals "Backside."
MSTCrow 00:56, Jun 4, 2004 (UTC)
[edit] Who architected the Alpha?
"The Alpha project's main computer architects/designers were Rich Witek, Dick Sites, and Trygve Fossum."
- What exactly was Trygve Fossums involvement with Alpha? Is it correct to credit him as main architect/designer?
Stefan
[edit] Disambig reference re: AXP is unnecessary
I removed the blurb discussing the abbreviation AXP and two of its other interpretations because:
- the page AXP in fact does not redirect here. Rather, that page is a proper disambiguation page that mentions each of the alternatives; and
- there is no likelihood of confusion, since as mentioned, AXP is a disambig page, and further since the name of this page—"DEC Alpha"—does not even include the string "AXP."
—Ryanaxp 15:04, Jun 22, 2005 (UTC)
[edit] Multia
Someone just changed the Multia from a 21068 to a 21066. If the 21066 was named LCA ("Low Cost Alpha"), then IIRC, that's correct 'cause Multia used LCA as did at least one Single Board Computer built by DEC.
Atlant 16:55, 12 July 2006 (UTC)
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- 21068 was also called LCA4, like 21066. DEC Multia service manual lists 233 MHz Multia as having a 21068, but 21068 was only rated at 66 (sic) MHz according to data sheet, so presumably 233 MHz Multia chip was a 21066A. Letdorf 16:59, 12 July 2006 (UTC).
[edit] Epicode
Hi, all.
I am new to Wikipedia... so if I commit a fox pass, please forgive.
Do the production versions of the Alpha support Epicode?
I am an embedded systems designer and I read with great interest an article in Byte Magazine years ago speaking to the ability of the Alpha to take on any instruction set, not just that of the VAX with Epicode. I was trhilled and thought this was indeed the computer architeture to take DEC 25 more years. Want to make a CDC6600? No Problem!
Time passed and the Alpha came out, but when I received an Alpha Data Book, it was not spoken about, nor have I seen anything in the press since the Byte article which preceded (if memory serves) the release said nothing about Epicode.
Can anyone tell me if the Epicode architecture was actually implemented?
Broh. (Broh-dot)
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- AFAIK, Epicode was a DEC PRISM thing. Epicode evolved into PALcode on the Alpha, which was only used to hide differences between platforms and processor variants (ie. a kind of hardware abstraction layer) and not to completely redefine the instruction set. Letdorf 10:03, 25 July 2006 (UTC).
[edit] 21466?
Do we have any references for the existance of a 21466 variant of the EV8? Letdorf 10:24, 25 September 2006 (UTC).
