You are not logged in -
nap
CSDb User Forums
Forums
>
C64 Coding
>
unemulated VSP graphical glitch ?
2023-05-09
21:18
Oswald
Registered: Apr 2002
Posts: 5022
unemulated VSP graphical glitch ?
Me doing VSP in the middle of the screen, need the VICII in idle state for this to work (or so I know) so I open a line that displays $3fff with "FLD", the VSP effect is achieved via a dec $d011, right after that in the following cycles FLI bug shows up, and after the FLI bug VICII returns to "normal" display.
however when using banks $4000 and $c000 also a 1 cycle wide black "bug" shows up too (before the fli bug I believe), but using banks $0000 or $8000 this doesnt happen.
vice 3.7 or hoxs doesnt emulate it.
possible explanation would be that VICII doesnt have the bus so reads $ff from non connected bus for ghost byte, but the used banks also control the behaviour.
edit: I have another VSP on the top of the screen done on the top border
2023-05-09
21:40
tlr
Registered: Sep 2003
Posts: 1717
Isn't this just the recently discussed anomaly here:
Testers needed: unemulated DMA Delay Artefacts
2023-05-10
08:32
Oswald
Registered: Apr 2002
Posts: 5022
oh yes, it looks to be the same, sorry I have red that thread, but forgot about it, didnt realize when reading what exactly the bug does.
Refresh
Subscribe to this thread:
You need to be logged in to post in the forum.
Search the forum:
Search
All forums
C64 Coding
C64 Composing
C64 Pixeling
C64 Productions
CSDb Bug Reports
CSDb Discussions
CSDb Entries
CSDb Feedback
CSDb Info
CSDb moderators
CSDb Questions
CSDb V2 development
Messages to moderators
Requests
for
in
Writer & text
Text
Writer
All times are CET.
Search CSDb
All
Releases
Groups
Sceners
Events
BBS
SIDs
-------
Forum
Comments
Advanced
Users Online
Unlock/Padua/Albion
Didi/Laxity
Frostbyte/Artline De..
zscs
d0c
t0m3000/ibex-crew
d'Arc/Topaz Beerline
Sledge/Fairlight
machete
DeMOSic/HF^MS^BCC^LSD
Guests online: 145
Top Demos
1
Next Level
(9.8)
2
Mojo
(9.7)
3
Coma Light 13
(9.7)
4
Edge of Disgrace
(9.6)
5
Comaland 100%
(9.6)
6
No Bounds
(9.6)
7
Uncensored
(9.6)
8
Wonderland XIV
(9.6)
9
Memento Mori
(9.6)
10
Bromance
(9.5)
Top onefile Demos
1
It's More Fun to Com..
(9.7)
2
Party Elk 2
(9.7)
3
Cubic Dream
(9.6)
4
Copper Booze
(9.5)
5
TRSAC, Gabber & Pebe..
(9.5)
6
Rainbow Connection
(9.5)
7
Dawnfall V1.1
(9.5)
8
Quadrants
(9.5)
9
Daah, Those Acid Pil..
(9.5)
10
Birth of a Flower
(9.5)
Top Groups
1
Nostalgia
(9.3)
2
Oxyron
(9.3)
3
Booze Design
(9.3)
4
Censor Design
(9.3)
5
Crest
(9.3)
Top Graphicians
1
Sulevi
(10)
2
Mirage
(9.8)
3
Lobo
(9.7)
4
Mikael
(9.7)
5
Archmage
(9.7)
Home
-
Disclaimer
Copyright © No Name 2001-2024
Page generated in: 0.046 sec.