Re: B/W X/Y?

On Thu, 29 Apr 1999 13:07:50 -0400 (EDT), Ed Henciak <eddie@telerama.com> wrote:

>In a Cinematronics monitor, are the X, Y, and Timer registers on the
>monitor, or are they apart of the CPU boards (along with the PROM that
>holds the new values when a LLT instruction is executed). I have never
>worked with Cinematronics stuff directly. Thanks!

Only the DACs were on the monitor, the latches that drive the DACs along with
the Timer register and PROM that compensates for the non-linearities of the
display, all reside on the C-CPU card. On a couple of games (Sundance and Solar
Quest) there is also a simple intensity DAC made up of 4 to 6 transistors.

All the information going to a Cinematronics monitor is digital.

-Zonn
>
>Ed
>
>
>On Thu, 29 Apr 1999, Andrew Wilson wrote:
>
>>
>>
>> > Okay so maybe WG's weren't original stock, but they still would
>> > work wouldn't they?
>>
>> As I recall, the Cinematronic games send digital information to the monitor,
>> while (all?) other vector games send analog signals. So Cinematronic games won't
>> work with an analog vector monitor (like the WG you are looking at). I also dimly
>> recall that people have tossed around the idea of making a DAC board that would take
>> the Cinematronic digital input and generate W-G compatible analog output, but if
>> anyone's done this I haven't heard about it...
>>
>> Drew
>>
>>
>
Received on Thu Apr 29 14:28:24 1999