You are not logged in - nap VDC-FLI   [2011] Released by : Akronyme Analogiker Release Date : 12 June 2011 Type : C128 Release User rating: awaiting 8 votes (4 left)   See votestatistics Credits : Code  ....  tokra of Akronyme Analogiker Download : http://csdb.dk/getinternalfile.php/97931/vdc-fli.zip (downloads: 738) http://csdb.dk/getinternalfile.php/98135/converters-source.zip (downloads: 261) Look for downloads on external sites:  Pokefinder.org Production Info Submitted by tokra on 12 June 2011 This mode came about trying to figure out how the (brilliant) "Risen from Oblivion"-demo does its own FLI-mode. By hardware the VDC only supports a maximum of 8x2 color-blocks by setting register 9 of the VDC to two rasterlines. If you try to set it to 1 rasterline to get an 8x1 mode the VDC won't activate the display and you only get a blank screen. The trick to force the VDC to display is to watch bit 5 of$d600 (VBLANK) and switch register 9 to one rasterline right after the VLANK-period has finished and back to any other value once VBLANK starts again. This fools the VDC into displaying the 8x1 mode. However since the VDC now has to fetch the character- as well as the attribut-byte for every rasterline you can only address a screen of 60 chars wide (=480 pixels), otherwise the screen gets garbled. The register 9-switcher is realized as a quick and dirty 47 byte assembler routine. If you want to do it proper you will have to set up a VDC-raster-interrupt and for that you first need to measure your specific VDC-chip's speed. That is what "Risen from Oblivion" does when you start it. Search CSDb All Releases Groups Sceners Events BBS SIDs ------- Forum Comments Advanced Navigate Prev - Random - Next Detailed Info · Summaries (1) · User Comments (4) · Production Notes (1) Fun Stuff · Goofs · Hidden Parts · Trivia Forum · Discuss this release Support CSDb Help keep CSDb running: Funding status:

About this site: CSDb (Commodore 64 Scene Database) is a website which goal is to gather as much information and material about the scene around the commodore 64 computer - the worlds most popular home computer throughout time. Here you can find almost anything which was ever made for the commodore 64, and more is being added every day. As this website is scene related, you can mostly find demos, music and graphics made by the people who made the scene (the sceners), but you can also find a lot of the old classic games here. Try out the search box in the top right corner, or check out the CSDb main page for the latest additions.

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