6805 equipment pulls
legalize at xmission.com
Thu Mar 3 15:56:49 CST 2011
In article <4dece01a1688a435ac02afa322112d3f at cs.ubc.ca>,
Brent Hilpert <hilpert at cs.ubc.ca> writes:
> Fortune shines in a small way.
> The MC146805E2 is a CMOS 6805 with no internal ROM. 8 pins are
> multiplexed data and low order-address (A0-A7), another 5 pins are
> higher-order-address (A8-A12). There are an address strobe pin and data
> strobe pin for demuxing.
> Other major features:
> - 112 bytes internal RAM
> - 16 programmable bidir IO port lines.
> - internal 8-bit timer and 7-bit prescaler.
> - on chip oscillator
> I see there is only one accumulator in the 6805s, so - as Eric was
> hinting at - the base CPU is paired down from the 6800. Haven't checked
> whether it is op-code compatible.
Yay, so its not a crap chip after all and could be reused in a
If anyone wants one, let me know and I'll collate together requests
and pass it on.
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
Legalize Adulthood! <http://legalizeadulthood.wordpress.com>
More information about the cctalk