How are you gentlemen!! This is my first time writing an assembler. It is barebones, and I didn`t write documentation yet. But there is a source file included which can be assembled and run (tested on Saturn via usb-link and Yabause) which shows a scrolling pattern on the screen. BASIC source is included. Enjoy, http://www.hyakushiki.net/superas.zip
I think you can change a ton of those IF's into CASE's, and use of GOTO in a high level language is evil xD My tracker for making music on MD is about 3000 lines of BASIC mess, but there's not a single GOTO or GOSUB in there Still, nice effort ^^
update: added a brief manual and fixed a problem with MOV/MOVA opcodes also, here are a couple more demos showing bitmaps with interlaced 448-line resolution (Yabause 9.10 doesn`t show the extra resolution but Saturn does) http://www.hyakushiki.net/satdemos.zip GOTO`s are unfashionable... but I am not fashion concious
updated the archive once more. BTW, does anyone have code showing how to toggle the clock speed between 26.8/28.6MHz?
I think this was enough to switch to 28mhz SYS_CHGSYSCK(1); //28mhz set_imask(0); maybe you need also a resolution of 352x...,704x... just an off topic note, maybe you could participate to the S.A.T.U.R.N Contest, you're doing some nice stuff on saturn. http://segaxtreme.net/community/topic/16872-saturn-contest-roll-call/
Thanks for posting. You are talking about a Sega library function or something yes? I haven`t looked at any of that, since I don`t really understand C. I spotted the 0x06000320 in your post though, and tried calling the routine at that vector by using TRAPA #200. It seems to work fine on the Saturn but under Yabause it somehow ends up going through $6000010 (illegal instruction exception?)
yes, that from the SBL. Strange, Yabause supports such modes. I use 352x... for emulators to get free additionnal speed.
The address at $6000320 needs to be loaded, and then JSR needs to be used to call the routine at that address (because it returns with RTS). Don`t ask me why they put jump tables in the vector area and decided to use JSR/RTS instead of TRAPA/RTE.
