--- np2/i286a/i286a.c	2003/12/22 07:41:15	1.2
+++ np2/i286a/i286a.c	2004/01/25 06:26:39	1.11
@@ -73,11 +73,89 @@ const UINT8 iflags[512] = {					// Z_FLA
 
 // ----
 
-void i286a_reset(void) {
+void i286a_initialize(void) {
+
+	ZeroMemory(&i286acore, sizeof(i286acore));
+}
+
+void i286a_deinitialize(void) {
+
+	if (CPU_EXTMEM) {
+		_MFREE(CPU_EXTMEM);
+		CPU_EXTMEM = NULL;
+		CPU_EXTMEMSIZE = 0;
+	}
+}
+
+static void i286a_initreg(void) {
 
-	ZeroMemory(&CPU_STATSAVE, sizeof(CPU_STATSAVE));
-	CPU_CS = 0x1fc0;
-	CS_BASE = 0x1fc00;
+	CPU_CS = 0xf000;
+	CS_BASE = 0xf0000;
+	CPU_IP = 0xfff0;
 	CPU_ADRSMASK = 0xfffff;
 }
 
+void i286a_reset(void) {
+
+#if 0
+	if (offsetof(I286CORE, m) != 120) {
+		exit(1);
+	}
+#endif
+	ZeroMemory(&i286acore.s, sizeof(i286acore.s));
+	i286a_initreg();
+}
+
+void i286a_shut(void) {
+
+	ZeroMemory(&i286acore.s, offsetof(I286STAT, cpu_type));
+	i286a_initreg();
+}
+
+void i286a_setextsize(UINT32 size) {
+
+	if (CPU_EXTMEMSIZE != size) {
+		_MFREE(CPU_EXTMEM);
+		if (size) {
+			CPU_EXTMEM = (BYTE *)_MALLOC(size + 16, "EXTMEM");
+			if (CPU_EXTMEM == NULL) {
+				size = 0;
+			}
+		}
+		CPU_EXTMEMSIZE = size;
+	}
+	i286acore.e.ems[0] = mem + 0xc0000;
+	i286acore.e.ems[1] = mem + 0xc4000;
+	i286acore.e.ems[2] = mem + 0xc8000;
+	i286acore.e.ems[3] = mem + 0xcc000;
+}
+
+void i286a_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);
+	}
+	i286acore.e.ems[frame] = ptr;
+}
+
+
+#if 0	// ---- test
+void ea_assert(UINT32 x) {
+
+	TCHAR	buf[32];
+
+	wsprintf(buf, _T("addr = %x [%.2x]"), x, i286_memoryread(x - 2));
+	MessageBox(NULL, buf, _T("!"), MB_OK);
+	exit(1);
+}
+#endif
+