sean1@garfield.UUCP (11/03/86)
Does anyone out there know what format a Koala picture has to be in to be used on a C-128? I have a loader which works on the 64, but I am not sure where the memory has to be loaded into on the 128. There is the 8000 bytes of Graphic memory, which goes at 8192, the 1000 bytes of low color memory, and the 1000 bytes of hight color memory. I would appreciate a bit of help on this. I have written a game in Basic 7.0 for the 128 and would like to display a Koala title screen. Thanks. I have an Ahoy magazine article which supposedly tells all, but it is WRONG, very wrong. Thanks. /~~~~~\ |~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| |/ / \ \| | UUCP: {akgua,allegra,cbosgd,ihnp4,mcvax,utesri}!garfield!sean1 | (|-@-@-|) | CDNNET: sean1@garfield.mun.cdn | \| ^ |/ | Sean Huxter | | \_/ | | Apt. 420, 235 Blackmarsh Rd., St. John's, NF, Canada | \___/ |(Can YOU say NEWFOUNDLAND, boys and girls?) (and pronounce it?) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The opinions expressed here will be put to a general vote and the results will be posted. Stand by...
fred@cbmvax.commodore.COM (Fred Bowen) (11/05/86)
> Does anyone out there know what format a Koala picture has to be in to be used > on a C-128? I have a loader which works on the 64, but I am not sure where the > memory has to be loaded into on the 128. Since you sound familiar with the layout, and you are working in BASIC 7.0, I will give a brief example and explanation: 10 GRAPHIC 3,1 :REM MULTICOLOR GRAPHIC MODE 20 A=PEEK(1): B=PEEK(216) :REM SAVE THESE 30 POKE 216,255 :REM TELL IRQ TO GIVE US VIC CONTROL 40 POKE 1, A AND 252 :REM SELECT PROCESSOR NYBBLE BANK 50 BLOAD "PIC.BM",P(DEC("2000")) :REM LOAD BIT MAP 60 BLOAD "PIC.VM",P(DEC("1C00")) :REM LOAD COLORS 01 AND 10 70 BLOAD "PIC.CN",P(DEC("D800")) :REM LOAD COLORS 11 80 POKE 1,A :REM RESTORE SYSTEM NYBBLE BANK 90 POKE 216,B :REM RESTORE SYSTEM VIC CONTROL I think you can figure it out from here. The problem was your handling of the color nybble banks. There are two of them, one for text mode and one for multicolor graphic mode, and they are controlled by the two least significant bits of the port at $0001. Bit 0 controls which bank the processor sees, and bit 1 controls which bank the VIC sees. 1=text, 0=graphic. Normally, the editor handles all this automatically during IRQ processing. The system variable GRAPHM, location $D8 (216 dec), contains bits indicating the current graphic mode (text/graphic/split-screen). A special case, GRAPHM=255, means YOU want to twiddle the bits, and hence the system leaves hands-off. -- Fred Bowen uucp: {ihnp4|seismo|caip}!cbmvax!fred arpa: cbmvax!fred@seismo.css.GOV tele: 215 431-9100 Commodore Electronics, Ltd., 1200 Wilson Drive, West Chester, PA, 19380
sean1@garfield.UUCP (11/14/86)
In article <965@cbmvax.cbmvax.commodore.COM> fred@cbmvax.commodore.COM (Fred Bowen) writes: > 50 BLOAD "PIC.BM",P(DEC("2000")) :REM LOAD BIT MAP > 60 BLOAD "PIC.VM",P(DEC("1C00")) :REM LOAD COLORS 01 AND 10 > 70 BLOAD "PIC.CN",P(DEC("D800")) :REM LOAD COLORS 11 First, I want to thank Fred Bowen for the help, but in this example, I still need to know how to transfer a 40 block koala pic file to the three files mentioned above. Perhaps someone could tell me by using either a Basic program to move the appropriate memory around, or by using Monitor syntax for the 128, like: L "?pic a koala",8, whatever... T this and that... etc... to transfer the memory to its appropriate locations, and telling me which file goes into what locations and such. Yours in Desperation, /~~~~~\ |~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| |/ / \ \| | UUCP: {akgua,allegra,cbosgd,ihnp4,mcvax,utesri}!garfield!sean1 | (|-@-@-|) | CDNNET: sean1@garfield.mun.cdn | \| ^ |/ | Sean Huxter | | \_/ | | Apt. 420, 235 Blackmarsh Rd., St. John's, NF, Canada | \___/ |(Can YOU say NEWFOUNDLAND, boys and girls?) (and pronounce it?) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The opinions expressed here are only meant to show my ignorance.