14 Dec
2009
14 Dec
'09
1:24 p.m.
I'm just considering divesting myself of a Ferguson Big Board system that I've
never played with.
Looking it over and reading about the FBB .. just out of curiousity, does
anyone know offhand whether the on-board video display relied on the system Z80
CPU (such as in the Apple II or sinclair ZX80), or was it a 'pure peripheral'
to the CPU?
14 Dec
14 Dec
1:59 p.m.
On 14 Dec 2009 at 13:24, Brent Hilpert wrote:
I'm just considering divesting myself of a
Ferguson Big Board system
that I've never played with.
Looking it over and reading about the FBB .. just out of curiousity,
does anyone know offhand whether the on-board video display relied on
the system Z80 CPU (such as in the Apple II or sinclair ZX80), or was
it a 'pure peripheral' to the CPU?
The CPU could read and write the display memory (4x2114 SRAM), but
otherwise it was autonomous and did not rely on the CPU for
operation.
--Chuck
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