Re: Q: Monitor question - Apple IIc / Commodore 1402 Monochr.

[Roger Johnstone <rojaws@orcon.net.nz>]

In <1116235602.465820.141140@g44g2000cwa.googlegroups.com> D.B. wrote:
> Hello!
> 
> I am using a working setup with Apple IIc and a Commodore 14" 1084S
> colour-monitor through an video-enhancer unit on the back of the IIc.
> 
> The 1084S connects using av 9-pin VGA style connector and the RBG/TTL
> video-mode instead of the composite mode usually selected when
> connecting for instance a C64.
> 
> I recently came accross another Commodore monitor, namely the 
> Commodore 1402 which is a smaller 12" monochrome.
>
> Would this monitor work also? I do not dare to connect this monitor if
> the result could be damage to the video-enhancer.
> 
> Any feedback appreciated!
> 
> best regards
> 
> 
> ......................
> The monitor has the following specifications:
> 
> Commodore 1402 Monochrome Monitor:
> INPUT SIGNALS:
>  Video Signal(Intensity)----TTL Level Position
>  Sync Signal----------------Horizontal & Vertical Sync
>                             TTL Level
>  Resolution-----------------720dots X 350lines
> 
>  Sweep Frequency------------Horizontal: 18.432KHz
>                             Vertical: 50 Hz
>
> VIDEO INPUT TERMINAL:-------9 Pin D-subminiature connector

Those are the specs for a Hercules-compatible monitor. Hercules was the 
name of a high-resolution monochrome video card for IBM PCs that became 
a defacto standard in the early 1980s.

Commodore used to make IBM PC-clones, so that's probably what this 
monitor was intended to be used with. Unfortunately it won't work with 
any Apple II.
 
-- 
Roger Johnstone, Invercargill, New Zealand
http://vintageware.orcon.net.nz/
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