Forums

Sega Master System / Mark III / Game Gear
SG-1000 / SC-3000 / SF-7000 / OMV
Home - Forums - Games - Scans - Maps - Cheats - Credits
Music - Videos - Development - Hacks - Translations - Homebrew

View topic - About Snail.sms not working under Meka

Reply to topic
Author Message
  • Joined: 24 Jun 1999
  • Posts: 1732
  • Location: Paris, France
Reply with quote
About Snail.sms not working under Meka
Post Posted: Tue Mar 07, 2000 7:10 am
This is the following to the mail I sent you, Eric.
I found out the problem, which is that the code does not poll the VDP Status register at the beginning of the interrupt handler. It is necessary and fixing it bring back the correct speed.
  View user's profile Send private message Visit poster's website
Nyef
  • Guest
Reply with quote
Post Posted: Tue Mar 07, 2000 3:48 pm
Quote
> This is the following to the mail I sent you, Eric.
> I found out the problem, which is that the code does not poll the VDP Status register at the beginning of the interrupt handler. It is necessary and fixing it bring back the correct speed.

Let me guess, one VDP interrupt per "scanline" during VBlank? Or does it continue all the way down the screen?

Gotta love level-triggered interrupts. ^_^

--Nyef
 
Reply to topic



Back to the top of this page

Back to SMS Power!