Jun Sung Kim (���ؼ�) wrote: > * I think that (boot) ROM should be selected by hardwired manner to > execute initialization codes.
That is what happens, yes. > * That (boot) ROM may be MSX ROM of slot 0 (or slot 0-0). If true, > slot 0 (or 0-0) must be selected for page 0 by hardware reset. Indeed. The Slot select signals default to 0 after you turn on or reset your system. > * Then how about RAM? Is RAM located at page 3 after reset MSX? In the Basic setup, at pages 2 and 3. > * 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 When?? Uh, somewhere in the first stages of the boot sequence. Before the cartridges initialization starts. If ROM is selected in pages 0&1 ofcourse the RAM there disappears. However if you select the mapper RAM in pages 0 and 1 it will have selected segments 3 and 2 by default. ~Grauw --- Ushiko-san! Kimi wa doushite, Ushiko-san nan da!! _______________________________________________ MSX mailing list ([EMAIL PROTECTED]) Info page: http://lists.stack.nl/mailman/listinfo/msx
