B
Bitrotator
Guest
Hey Simmstickers (anyone out there?),
I've recently assembled the DT108 video on a simmstick and I'm having..
issues.
The scenario: I have an onboard AVR902313 plus MAX232. I've installed the
PAL crystal and verified with a multitester that it's oscillating at
17.73MHz.
The symptoms: The thing seems to boot up OK, however it seems to be forever
trying to get in sync- twice now it's actually worked, and I've seen a blue
background with the words 'Simmstick Video' on the screen. I saw some
flashing clocks too.. detail.. detail.
Any clues?
I'm also unsure about the role of the onboard RS232- is it only required if
the onboard micro isn't used? Are these the likely scenarios? :
1. Just the video chip- other driving circuits used on other simmsticks to
talk to the chip by setting levels on its pins.
2. The video chip is talked to by an onboard micro and this micro is
optionally talked to be the RS232, which is receiving data via either SI/SO
or TX/RX.
My knowledge of these issues is a little perforated!
Cheers,
Justin
=================================
| Justin James Clayden \
| Director, Cool Fusion Multimedia \
| mailto:justy@coolfusion.com.au \
| http://www.coolfusion.com.au \
=======================================
I've recently assembled the DT108 video on a simmstick and I'm having..
issues.
The scenario: I have an onboard AVR902313 plus MAX232. I've installed the
PAL crystal and verified with a multitester that it's oscillating at
17.73MHz.
The symptoms: The thing seems to boot up OK, however it seems to be forever
trying to get in sync- twice now it's actually worked, and I've seen a blue
background with the words 'Simmstick Video' on the screen. I saw some
flashing clocks too.. detail.. detail.
Any clues?
I'm also unsure about the role of the onboard RS232- is it only required if
the onboard micro isn't used? Are these the likely scenarios? :
1. Just the video chip- other driving circuits used on other simmsticks to
talk to the chip by setting levels on its pins.
2. The video chip is talked to by an onboard micro and this micro is
optionally talked to be the RS232, which is receiving data via either SI/SO
or TX/RX.
My knowledge of these issues is a little perforated!
Cheers,
Justin
=================================
| Justin James Clayden \
| Director, Cool Fusion Multimedia \
| mailto:justy@coolfusion.com.au \
| http://www.coolfusion.com.au \
=======================================