Re: VECTREX HERE!

> Hi everybody.
> after seeing andy's post about BZ on a vectrex i had to try it!
>
> there is a 4-pin plug between the logic and the monitor pcb's
>
> X,Y,Z & gnd (very handy!)

? i got a seperate plug for Z (with ground) yellow, and one for XY (with
ground) blue/red :) no matter.. works good :)

> X-Y are +/- 5v FSD, Z is +5v (i think)

yeah Z is most definately varying levels of [ 0v(off) to +5v(full bright) ]

> get the schematics here.
> ftp.130.86.90.1
>
> it's in pub/vectrex/manual/
>
> the file of interest is vservic4.zip
>
> this may work -
> ftp.130.86.90.1/pub/vectrex/manual/vservic4.zip
>
> ENJOY.

what results did you get as to watching a 'patchy' screen? do you agree that
the Z (beam-blanking) section of the monitor needs speeding up? i unhooked Z
from the ZOUT on the BZ board and hooked it to +5v, giving me full beam
intensity, no blanking. You can see that most objects are drawn properly
(all but the text, which is noticabley rounded), indicating that the beam
just isn't switching on/off/or a factor of, quickly enough?

could this be a limitation of the circuitry or the tube? my guess is it
*could* be the tube, but fingers crossed it isn't, i'm looking into the Z
section of the monitor for inspiration now..

Also, i am adapting the BZ test rig to take asteroids/ast deluxe (power and
pinout mod) this week hopefully... next up is star castle (cine) which i
need to build a DAC for :) I believe this ground has been trodden before
with regards to building a DAC for cine games to run on atari monitors,
anyone care to remember a link?

cheers..

Andy Welburn
(P-man)

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Received on Sun Dec 31 06:28:15 2000