Search found 4648 matches

by Mike
Sun Jan 21, 2024 7:41 am
Forum: General Topics
Topic: ** Revision 2024 Invitation / Website
Replies: 5
Views: 960

Re: ** Revision 2024 Invitation / Website

For what matters, you can always take a look at the photos I posted last year - and which I already linked to in the start post - to get a first impression of the frenzy taking place on Revision. You can reach Saarbrücken by train as follows (arriving one day earlier on Maundy Thursday to acclimatiz...
by Mike
Sat Jan 20, 2024 8:03 am
Forum: General Topics
Topic: ** Revision 2024 Invitation / Website
Replies: 5
Views: 960

** Revision 2024 Invitation / Website

From March 29th to April 1st 2024, Revision, the world's biggest pure Demoscene event, opens its doors at the E-Werk in Saarbrücken, Germany! Since 2011, each year there were attending around 800 visitors from more than 30 countries. Main language is English, with people coming from Europe, overseas...
by Mike
Tue Jan 16, 2024 12:38 am
Forum: Emulation and Cross Development
Topic: How to run Final Expansion 3 Files on XVIC?
Replies: 3
Views: 364

Re: How to run Final Expansion 3 Files on XVIC?

In first place you will need to operate VICE xvic with an emulation of the FE3 cartridge . This needs a suitable firmware image of FE3. Please check the relevant details in this post: Using FE3RD in VICE (was: Re: FE3 RAM Disk) . You'd then unpack ops' repo in a directory on the host PC and point VI...
by Mike
Sun Jan 14, 2024 12:22 pm
Forum: Programming
Topic: Restricting BASIC to the +3K expanded RAM area
Replies: 4
Views: 551

Re: Restricting BASIC to the +3K expanded RAM area

With a cartridge as intended medium, filling up BLK1..3 and BLK5 with all ROM is the most likely scenario and supported out-of-the-box by VICE. Here's how I would fill these address ranges from disk, on real hardware: 1 POKE55,0:POKE56,32:CLR:DN=PEEK(186) 2 N$="BLK123":GOSUB6 3 N$="BL...
by Mike
Sun Jan 14, 2024 9:23 am
Forum: Programming
Topic: Restricting BASIC to the +3K expanded RAM area
Replies: 4
Views: 551

Re: Restricting BASIC to the +3K expanded RAM area

[...] I wonder if I have missed anything [...] LOAD in program mode does not set the pointer in 45/46 (start of variables, a.k.a. "end of program"), rather it retains the value from the program that does the load. In your case, the value of your 2-line boot program. If the chained-through...
by Mike
Thu Jan 11, 2024 3:17 am
Forum: Collecting and History
Topic: VIC-20 manual type in games - how many revisions/versions?
Replies: 4
Views: 899

Re: VIC-20 manual type in games - how many revisions/versions?

It is somewhat unlikely that these three type-ins would have received any kind of official "updates" during the time the VIC-20 was sold. As far as I'm concerned, the printout of the games you linked to on archive.org is exactly the one I know from the manual that came with my (German) VC-...
by Mike
Tue Jan 09, 2024 3:27 pm
Forum: Games
Topic: New Game: FiZZ for Vic20 (35Kb)
Replies: 19
Views: 4325

Re: New Game: FiZZ for Vic20 (35Kb)

FiZZ will get an extensive playthrough on original hardware this weekend, [...] So we did on Sunday evening. After roughly 1 1/2 hours, we arrived at Level 22 ... https://dateipfa.de/.Public/denial/images/games/FiZZ_Level_22.jpg ... but then, the delivery boy rang the bell and brought the lunch ord...
by Mike
Sun Jan 07, 2024 11:19 am
Forum: Programming
Topic: Pixel, pixel, on the wall - who's the squarest of them all?
Replies: 3
Views: 2355

Re: Pixel, pixel, on the wall - who's the squarest of them all?

The pixel aspect ratio (PAR) of hires pixels on PAL is 5:3 (or 1.667:1) and on NTSC it is 3:2 (or 1.5:1).
by Mike
Sat Jan 06, 2024 5:11 am
Forum: Games
Topic: New Game: FiZZ for Vic20 (35Kb)
Replies: 19
Views: 4325

Re: New Game: FiZZ for Vic20 (35Kb)

[...] Hi, Andy! First of all, a warm welcome to Denial! :D FiZZ will get an extensive playthrough on original hardware this weekend, together with a good friend. I told him the VIC-20 got a "2D" version of Manifold Garden , to which he replied: "You gotta be kiddin' me???" - not...
by Mike
Wed Jan 03, 2024 8:47 am
Forum: Programming
Topic: ** Stable rasters on the VIC-20
Replies: 8
Views: 4077

Re: ** Stable rasters on the VIC-20

In another thread , I documented the workings of the inner loop in the example of this thread's start post a little more in detail: [...] .Frame1 LDA &900E ; Load current aux. colour/volume register, EOR aux_extbrd_1,Y ; change the aux. colour, AND #&0F ; but keep the volume EOR aux_extbrd_1...
by Mike
Wed Jan 03, 2024 8:05 am
Forum: Programming
Topic: Updated BASIC and KERNAL disassembly
Replies: 31
Views: 8851

Re: Updated BASIC and KERNAL disassembly

Hi, Simon, in line 263 of your (at the time I write this most recent) Super Expander source , it reads: 263 JMP (CBINV) ; ?? handle restore via BRK vector ?? Some time ago I also had stumbled across this, as that one leads to unexpected behaviour of the [RESTORE] key with MINIMON. MINIMON itself pla...
by Mike
Wed Jan 03, 2024 7:12 am
Forum: Programming
Topic: How do I redefine characters with 8k or more RAM?
Replies: 25
Views: 3262

Re: How do I redefine characters with 8k or more RAM?

Would this be correct? Exactly. :mrgreen: Just a small remark about your use of "bits": from context it is clear what you mean with "data bits", but in the field of computer science, bit is a established term to denote the smallest amount of information, with its value being eit...
by Mike
Tue Jan 02, 2024 3:10 pm
Forum: Emulation and Cross Development
Topic: Please help with overwritten *.d64 (split/OT from: Flappy Bird [...])
Replies: 4
Views: 2143

Re: Please help with overwritten *.d64 (split/OT from: Flappy Bird [...])

[...] :?: IMO, it is somewhat inappropriate to attribute this issue to the game and post about it in the game's thread. Even on real hardware there exist enough possible scenarios that can lead to data loss with disks, when exchanging disks in the drive mid-operation - especially when the drive act...
by Mike
Tue Jan 02, 2024 11:48 am
Forum: Games
Topic: Flappy Bird for the VIC 20 (unexpanded)
Replies: 7
Views: 2294

Re: Flappy Bird for the VIC 20 (unexpanded)

Enjoy! Thanks! And welcome to Denial! :D [...] for me this is unplayable. Flappy Bird always has been quite unplayable TBH, but any lags in emulation do not make it any easier. ;) Is it a board restriction or why is it zipped? The forum software does not allow for *.prg files in attachments ... I k...
by Mike
Tue Jan 02, 2024 11:24 am
Forum: Programming
Topic: How do I redefine characters with 8k or more RAM?
Replies: 25
Views: 3262

Re: How do I redefine characters with 8k or more RAM?

1. When I boot up the computer with 35k, do I need to always relocate the start of basic with POKE44,22:POKE5632,0:NEW in order to access the 28k or so allocated to basic and displayed at the top? No. The expanded memory as such is available right from the beginning. However, the procedure I highli...