--- "Jun Sung Kim (���ؼ�)" <[EMAIL PROTECTED]> wrote: > > * I think that (boot) ROM should be selected by > hardwired manner to execute > initialization codes.
On MSX-1 yes. On MSX-2 not necessarily, because MSX-2 upgrade sets for MSX-1 could change that. http://www.msxhans.msx2.com/pdfsdiy/msx2th07.pdf tells you the offical ASCII story. So dont assume but look it up, code for that is in the pdf. > * Then how about RAM? Is RAM located at page 3 after > reset MSX? No, dont assume that. Look it up. See http://www.msxhans.msx2.com/pdfsdiy/msx2th07.pdf for code examples. > * Another question now ^^: When is "memory MAPPER" > initialized as follows? > > > page 0: segment 03 > > page 1: segment 02 > > page 2: segment 01 > > page 3: segment 00 Very early in the boot sequence, because one of the first things the BIOS needs is RAM and RAM may be in a memory mapper. You might have a look at the ASCII documents MSX-2 Technical Reference, MSX 2 Technical Handbook and the MSX Red book. Found on funet or on www.msxhans.msx2.com in the Books and Magazines section. __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com _______________________________________________ MSX mailing list ([EMAIL PROTECTED]) Info page: http://lists.stack.nl/mailman/listinfo/msx
