Subject: Re: [stella] Supercharger BIN format From: Eckhard Stolberg <Eckhard_Stolberg@xxxxxxxxxxxxxxxxxxxxx> Date: Mon, 11 Jan 1999 17:04:02 +0100 |
At 07:51 11.01.99 -0600, you wrote: >reproduced here. Using what Eckhard wrote will work for MOST loads, but >there is one load >for sure that uses calculated bank bytes, but I don't remember which. I don't think I understand what you mean. The bank bytes are fixed on the tape. How can you have calculated bank bytes without writing a completely new loader BIOS that ignores the bank bytes on the tape? > Bank Byte Bits: 7 6 5 4 3 2 1 0 > \_______/ \/ > Page # Bank # > > For example, a page loaded into bank 3, page 4 > would have a page # of 000100 and a bank # of > 11, combining these together you get 00010011 > for a Bank Byte of #$13. The simple formula to > calculate the Bank Byte is: > > (Page # * 4) + Bank # Is this just a bad example or can you really load something into the ROM area? (Bank 3 must be the ROM, since banks and pages are counted from zero. At least the bank bytes in makewav, where I got my information from, indicate that.) Thanks, Eckhard Stolberg -- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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