Re: //gs video and keyboard anomalies

[Patrick Schaefer <patrick.schaefer@topmail.de>]

David Wilson schrieb:

> I plugged my ROM03 //gs into a color TV for the first time this weekend
> and was disappointed to find that I get no color. 

An European IIGS connected to a Sony Trinitron 50Hz PAL TV works fine.
The IIGS can be set to 50Hz or 60Hz operation, it makes no difference. 
The picture is b/w in text mode and turns into color when switched to
HGR or GR. It seems that the color killer transistor is always active in
text mode to avoid color fringes.
Really a pity that Archon does not run on the IIGS! It would be great to
play on the color tv.

A Mac 12" RGB display connected to the IIGS showed the correct colors,
but didn't get into horizontal sync. The scan line frequency doesn't
fit, but it should be possible to adjust this with the internal H-Phase 
or H-Hold controls. At least in Germany a Mac display is VERY much
cheaper than the rare AppleColor RGB display for the IIGS, therefore
this is worth a try.


> I picked up a cheap Mac keyboard and plugged it into the //gs. It works fine,
> the function keys show up as letters with the Numeric Keypad modifier bit set.
> I can even type on both keyboards at once. The one thing I found is that
> CAPS LOCK on one keyboard also affects the second one 

When you press CAPS LOCK, the keyboard sends a "that guy pressed CAPS
LOCK"-message to the computer. The ADB controller answers "turn on CAPS
LOCK LED", and this is received by both keyboards.


Patrick