Comments on: Py65 0.4 Released

By: Mark

Mark — Sun, 16 Aug 2009 19:05:36 +0000

Answering my own quest. On my macbook pro (2.1GHz) I can execute

ldy $0
loop:
iny
jmp loop

1 million steps in 20 seconds. I think the main loop is 5 cycles. Which is 250k cycles per second.

By: Mark

Mark — Sat, 15 Aug 2009 19:49:16 +0000

This is an excellent idea. Given the power of modern hardware it would be interesting to see the performance.

By: karen thoren-day

karen thoren-day — Mon, 20 Jul 2009 15:11:39 +0000

Does anyone know where I can locate any W65C02S*PG14 or sooner PG-10, 11, 12 or 13

By: Mike Naberezny

Mike Naberezny — Sun, 07 Jun 2009 18:57:03 +0000

There are many applications for it in embedded systems and consumer devices. WDC's website notes, "Annual volumes in the hundreds (100’s) of millions of units keep adding in a signiﬁcant way to the estimated shipped volumes of ﬁve (5) to ten (10) billion units." One of the Py65 contributors works professionally on a handheld device based on the ST20P64, a 65C02-based microcontroller with an integrated LCD controller and sound generator. There are quite a few specialty microcontrollers like that one compatible with the 6502 instruction set. This page has a few links to more. 6502-based cores are also popular in custom ASIC and VHDL designs, with even hobbyists synthesizing their own VHDL cores.

By: Matt Wilson

Matt Wilson — Sun, 07 Jun 2009 15:49:45 +0000

I don’t mean to sound like a troll, but what do you do with a 6502 microprocessor?