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Posted By

Charlemagne
on 2024-12-20
13:26:33
 Merry Christmas and Happy New Year (from Charlemagne)

Dear Each Commodore Plus/4 Fan,

First of all, I would like to wish Merry Christmas and Happy New Year for all of You!

After a little crisis of creativity I have pushed out a new version of LUMYDCTT with a "new" (I have used it for a while as a file version) version-system: v0.6.9.0 (four digits).





https://youtu.be/ZwElfx0Ww04

Some "new" and some "old" features:
(+) F5: Switch between English and Hungarian kernal
(+) F6: Switch between Joystick port #1 and #2
(+) F9: RunStop
(+) F10: Pause Fridi
+ F11: Soft Reset (Lite Reboot)
+ F12: Hard Reset (Force Reboot)
+ Start to write on borders (Godzilla, Digital Ball)
+ Implement "Hardware"-scroll (Hollywood Poker, Invincible)

Thoughts...

#1.: DCP
In the version of (0.)6.8.4 I had implemented a (exactly 7) "illegal" instruction(s) called "DCP", because Hollywood Poker (and Időlabirintus), but I cannot see the meaning of it... ...Decrement and CoMpare a value, but why? It seems to be superfluity. They could copy the real values at first, or could not?

#2.: Godzilla
I started to examine the border-writing and it was very strange what happend: as if "the space can curve back" on the top after reach the bottom. The picture (Godzilla) starts at $2280 and goes to $3F3F then switch the graphical area to $6080 and comes the "BORDER THE MAD"-graphics on the bottom border ...then a little waiting... and "GODZILLA"-graphics comes from $6BC0 to $70BF on the top border.

#3.: Digital Ball
Here, I can realize there are two different beams (counter), maybe. First one is the "TV scan beam" that draws the content of the screen. The second one is a "Logical beam" ($FF1C and $FF1D) that you can set, if you want.




#4.: Border syndrome
So we can manipulate when we want to write on borders by "Logical beam"(?) ...when "TV scan beam" reaches the bottom the "Logical beam" may be not... It is an enigma (for me).

Have a good thinking!


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