23 May
2015
23 May
'15
12:42 p.m.
On May 23, 2015, at 12:35 PM, Chris Elmquist <chrise at pobox.com> wrote:
The GBS-8200/8220 does support CGA
The GBS-8200/8220 supports analog signals, not digital. It will directly support the 15khz
misnamed ?CGA? of arcade monitors (which is the same RGB signal the IIgs puts out), but
that?s an analog signal, not digital. For use with the Commodore 128 I had to build a
small circuit which converts the RGBI signal to analog RGB.
In the case of the BBC Micro which also puts out 5V TTL digital RGB, I didn?t bother with
lowering the levels since the GBS-8200 didn?t care and I didn?t need to deal with a 4th
intensity signal.
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