joeloda@aicchi.UUCP (Joseph D. Loda) (03/16/85)
Awhile back, I posted a request for information on the use of a 65C02 in an Apple ][+. Thankfully, several good responses were posted. In the latest (March 1985, V8 #3) issue of Call-APPLE, the Apple Doctor column (written by Bruce Field) contained a small article of "other" processors for the ][+. Here are some of the "high points" of the article: - The 65C02 is pin compatible with the 6502, and has 27 additional instructions. - Chips manufactured by different manufacturers are not all the same. For instance, the Rockwell chip has four more instructions dealing with bit manipulation. - A given 65C02 may or may not work in an Apple ][ or ][+. - Two new chips have recently appeared, a 65802 and 65816. These are CMOS chips with 16 bit registers and contain 6502 emulators. - The 65802 is pin compatible with the 6502, and can be used in any Apple. The author notes that hew was told that this chip will work in a //e, but does not know if it will work in the older ][ or ][+ models. (I suspect that this will probably be the same old **** as with the 65C02 for us ][ owners. Wouldn't it be nice if Apple INC. would offer processor upgrade kits?) - The 65816 is not 6502 pin compatible. - The author notes that most of his information came from "Apple Assembly Line", published by S-C Software, PO Box 280300, Dallas, Tx 75228. (BTW, any comments on this newsletter?) -- Joe Loda Analysts International (Chicago Branch) (312) 882-4673 ..!ihnp4!aicchi!joeloda
etm@wuibc.UUCP (03/18/85)
In his article concerning alternative Apple processors, Joe Loda wrote: > - The author notes that most of his information came from "Apple Assembly > Line", published by S-C Software, PO Box 280300, Dallas, Tx 75228. > (BTW, any comments on this newsletter?) I've been subscribing to Apple Assembly Lines for over 3 years now; it is a newsletter aimed at assembly language programmers, particularly those using the S-C Assembler. I happen not to use that assembler, but I still find enough good articles to justify the subscription. It is published monthly by Bob Sander-Cederlof (hope I spelled that right, Bob!). The articles mainly deal with tricks for improving the performance/capabilities of the S-C Assembler, in addition to more generic discussions of algorithms and code for performing functions in assembly language. And some industry gossip is thrown in for good measure. The newsletter is definitely not for the neophyte, but is worth considering by the serious assembly language programmer. DISCLAIMER: The usual stuff; also, I am not connected with S-C Software or Apple Assembly Lines other than as a satisfied subscriber. Ed Macke Computer Systems Lab Washington University St. Louis, Mo. ...!ihnp4!wucs!wuibc!etm -- Ed Macke Computer Systems Lab Washington University St. Louis, Mo. ...!ihnp4!wucs!wuibc!etm