--- np2/i286x/i286x.cpp 2004/01/10 17:24:01 1.15 +++ np2/i286x/i286x.cpp 2004/01/25 07:53:08 1.17 @@ -57,6 +57,15 @@ void i286x_initialize(void) { v30xinit(); } +void i286x_deinitialize(void) { + + if (CPU_EXTMEM) { + _MFREE(CPU_EXTMEM); + CPU_EXTMEM = NULL; + CPU_EXTMEMSIZE = 0; + } +} + static void i286x_initreg(void) { I286_CS = 0xf000; @@ -78,6 +87,44 @@ void i286x_shut(void) { i286x_initreg(); } +void i286x_setextsize(UINT32 size) { + + if (CPU_EXTMEMSIZE != size) { + if (CPU_EXTMEM) { + _MFREE(CPU_EXTMEM); + CPU_EXTMEM = NULL; + } + if (size) { + CPU_EXTMEM = (BYTE *)_MALLOC(size + 16, "EXTMEM"); + if (CPU_EXTMEM == NULL) { + size = 0; + } + } + CPU_EXTMEMSIZE = size; + } + i286core.e.ems[0] = mem + 0xc0000; + i286core.e.ems[1] = mem + 0xc4000; + i286core.e.ems[2] = mem + 0xc8000; + i286core.e.ems[3] = mem + 0xcc000; +} + +void i286x_setemm(UINT frame, UINT32 addr) { + + BYTE *ptr; + + frame &= 3; + if (addr < USE_HIMEM) { + ptr = mem + addr; + } + else if ((addr - 0x100000 + 0x4000) <= CPU_EXTMEMSIZE) { + ptr = CPU_EXTMEM + (addr - 0x100000); + } + else { + ptr = mem + 0xc0000 + (frame << 14); + } + i286core.e.ems[frame] = ptr; +} + LABEL void i286x_resetprefetch(void) {