!pr1
!lm12
!rm75
Notes on the 6502 from various sources

EDN magazine, Nov 10, 1983, page 194, summarized the 650x and 65C0x processors.  Softalk, Dec 1983, page 64, in an article about Hayden Software, discussed two new versions of this family.

Original design by MOS Technology (bought out by Commodore).  Made by Commodore, Rockwell, Synertek, GTE, NCR, Ricoh, and Western Design Center.

6502...NMOS...available now in 1, 2, or 3 MHz...$5 each in 100 quantity for 1MHz.

65C02...CMOS...available now in 1MHz at $8.55 each or 2 MHz at $9.40.  3 and 4MHz coming in '84.

These clock rates are slow compared to Z-80, 68000, etc.; however, each instruction takes only 2-7 clock cycles.  Thus a 1MHz 6502 is roughly the same net speed as a 4MHz Z-80.

65802...Adds 16-bit registers and operations using status bit.  Available soon from Western Design Center, phone (602) 962-4545.  See Softalk.

65816...Adds 16-bit registers and operations, plus 24-bit address-bus for direct access to 16 megabytes.  Available soon from Western Design Center.  See Softalk.

6500 family still has the highest volume of any 8-bit microprocesser...15 million in 1982!  Commodore uses all the chips they make in their own products, so second sources supply the rest of the world's needs.  Even without the new 16-bit enhancements, this chip will probably continue to be used in new designs for at least 5 years.
