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Ci-dessous, les différences entre deux révisions de la page.

--- back2root:reverse-engineering:planet-x3:memory-map [2023/01/15 19:58] – frater
+++ back2root:reverse-engineering:planet-x3:memory-map [2023/01/15 20:18] (Version actuelle) – frater
@@ Ligne 1: / Ligne 1: @@
-====== Planet X3 - Memory Map ======
+====== Planet X3 - Part 4 - Memory Map ======
+<WRAP group>
+<WRAP half column center 15%>
+{{drawio>back2root:reverse-engineering:planet-x3:diagram1.png}}
+</WRAP>
+<WRAP half column>
+<code asm>
+main:	CALL		Timer_Setup_CustomHandler	; Timer_Setup_CustomHandler
+	MOV 		word ptr [g_Seg_Data],DS 	; preserve DS Segment
+	MOV 		AX,DS
+	ADD 		AX,0x1000                	; Allocate map Segment (at +0x1000)
+	MOV 		[g_Seg_GameMap],AX
+	MOV 		CX,0x8000                	; map Segment 32Kb
+	CALL		mem_clear                	; clear map Memory segment
+	SHR 		CX,0x1
+	SHR 		CX,0x1
+	SHR 		CX,0x1
+	SHR 		CX,0x1                   	; CX = CX [0x8000] div 16 = 0x800
+	ADD 		AX,CX
+	MOV 		[g_Seg_Gfx],AX           	; Allocate graphic Segment (at +0x1800)
+	MOV 		CX,0xffff                	; Audio Seg : 64Kb
+	CALL		mem_clear                	; void mem_clear(void)
+	ADD 		AX,0x1000
+	MOV 		[g_Seg_Audio],AX         	; Allocate Temp Segment (at +0x2800)
+	MOV 		CX,0xc000                	; Temp Size : 48Kb
+	CALL		mem_clear                	; void mem_clear(void)
+	SHR 		CX,0x1
+	SHR 		CX,0x1
+	SHR 		CX,0x1
+	SHR 		CX,0x1
+	ADD 		AX,CX                    	; 0xc00
+	MOV 		[g_Seg_Temp],AX          	; temp segment (all above)
+</code>
+</WRAP>
+</WRAP>
-{{drawio>back2root:reverse-engineering:planet-x3:diagram1.png |}}

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