init

charCalcs.asm

@@ -0,0 +1,104 @@
+ReturnCharsInString:
+
+
+        lhu v0,0x0(a0)
+        nop
+        srl v0,v0,0xD ;;;;Check 13th bit (1byte system !!!)
+        bne v0,zero,IsMy1byteString
+        clear v1 
+                                    ;v1 = charCount
+
+        j StartReading
+        nop                      
+IsMy1byteString:
+        lhu v0,0x0(a0)
+        nop
+        andi v0,v0,0xff         ;Clear from cmd flag
+
+        andi v1,v0,0x1
+        beq v1,zero,notAnd1
+        nop
+        addiu v0,v0,0x1
+
+notAnd1:
+        sra v0,v0,1             ;v0/2 (bytes Pairs)
+        addiu v0,v0,1           ;v0 += = header 2 bytes
+        jr ra
+        move v1,v0               ;return v0,v1 - charsNum
+
+GetNewChar:
+        addiu v1,v1,1
+StartReading:
+        lhu v0,0x0(a0)                  ;a0 - curTextAddr
+        nop
+        sltiu v0,v0,0x1000
+        bne v0,zero,GetNewChar         ;if currentChar<1000 - goto next addr+2b
+        addiu a0,a0,2
+        jr ra
+        move v0,v1                      ;return v0,v1 - charsNum
+
+
+calcNextXCustom:
+        addiu      sp,sp,-0x18
+        sw         ra,0x10(sp)
+
+        lhu v0,0x0(a0)
+        nop
+        andi v1,v0,0xff         ;Clear from cmd flag
+        srl v0,v0,0xD           ;;;;Check 13th bit (1byte system !!!)
+        beq v0,zero,JapOldText              ;if bit 0d = 0 - OldTypeText
+        nop
+        j IHaveStringLength
+        move v0,v1              ;double char count
+JapOldText:
+        jal        ReturnCharsInString  
+        nop
+IHaveStringLength:
+        sll        v1,v0,0x1
+        addu       v1,v1,v0
+        lw         ra,0x10(sp)
+        sll        v0,v1,0x1                    ;*charcount * 6 pix
+        jr         ra
+        addiu     sp,sp,0x18
+
+RetunCharsToCity:
+          lhu v0,0x0(a0)
+        nop
+        srl v0,v0,0xD ;;;;Check 13th bit (1byte system !!!)
+        bne v0,zero,IsMy1byteCity
+        clear v1 ;v1 = charCount
+
+        j StartReading
+        nop                      
+IsMy1byteCity:
+        lhu v0,0x0(a0)
+        nop
+        andi v0,v0,0xff         ;Clear from cmd flag
+        jr ra
+        move v1,v0               ;return v0,v1 - charsNum
+
+
+RetunCharsToCityDiv2:
+          lhu v0,0x0(a0)
+        nop
+        srl v0,v0,0xD ;;;;Check 13th bit (1byte system !!!)
+        bne v0,zero,IsMy1byteCityDiv2
+        clear v1 ;v1 = charCount
+
+        j StartReading
+        nop                      
+IsMy1byteCityDiv2:
+         lhu v0,0x0(a0)
+        nop
+        andi v0,v0,0xff         ;Clear from cmd flag
+
+        andi v1,v0,0x1
+        beq v1,zero,notAnd1_2
+        nop
+        addiu v0,v0,0x1
+
+notAnd1_2:
+        sra v0,v0,1             ;v0/2 (bytes Pairs)
+      ;  addiu v0,v0,1           ;v0 += = header 2 bytes
+        jr ra
+        move v1,v0               ;return v0,v1 - charsNum