Add OP codes 89, B5, B6, AF, & B0

- 0x89 DrawString
- 0xB5 StringCopy
- 0xB6 4E_to_471A (needs a better name)
- 0xAF StrToArgA
- 0xB0 ArgAToStr

labels.mlb

@@ -91,9 +91,24 @@ NesPrgRom:0551:LC551_loop
 NesPrgRom:055F:LC55F_exit
 NesPrgRom:05BC:LC5BC
 NesPrgRom:06AA:LC6AA
-NesPrgRom:0724:Handler_89
+NesPrgRom:0724:Handler_89_DrawString:\nDraws a string using characters\nfrom the ROM's character set.
-NesPrgRom:0745:LC745_loop
+NesPrgRom:073E:L073E_loop
+NesPrgRom:0745:L0745_loop
+NesPrgRom:074D:L074D
+NesPrgRom:0762:L0762
+NesPrgRom:0768:L0768_next
+NesPrgRom:076E:L076E
 NesPrgRom:0778:Handler_F1
+NesPrgRom:07D5:L07D5_end
+NesPrgRom:0884:L0884_LoadPRGCHR:\nSome kinda character load routine
+NesPrgRom:0890::A <- stack
+NesPrgRom:0891::A -> X
+NesPrgRom:0892::A <- X
+NesPrgRom:0893::A -> stack
+NesPrgRom:08C8:L08C8
+NesPrgRom:08ED:L08ED
+NesPrgRom:094A:L094A_loop
+NesPrgRom:096F:L096F_loop
 NesPrgRom:09A1:Handler_D4_SetCursorLoc
 NesPrgRom:09B3:Handler_E2_SetupSprite:ArgA: Attribute\nArbB-ArgC: a pointer\nArgD-ArgF: ???\nArgG: sprite index+64
 NesPrgRom:09FA:LC9FA_loop
@@ -738,6 +753,7 @@ NesPrgRom:420D:L820D_SwapToRamBank0
 NesPrgRom:421C:L821C_RestorePrevRamBank
 NesPrgRom:422C:L822C_RamBankB_Check:If $45FE is negative, chop\noff the top bit, shift it\nleft 4 times (high nibble to\nlow), and store that into\nRamBank_B.  Clear this high\nnibble from $45FE at the end.
 NesPrgRom:4241:L4241
+NesPrgRom:4242:L4242
 NesPrgRom:424B:L824B
 NesPrgRom:424C:L824C
 NesPrgRom:424D:Handler_81_InfLoop:Handler for bytecode $81.\nInfinite loop.
@@ -822,7 +838,7 @@ NesPrgRom:459C:L459C
 NesPrgRom:45A3:L45A3
 NesPrgRom:45BE:L45BE
 NesPrgRom:45C8:L45C8
-NesPrgRom:45D4:Handler_B7_DerefPointer:\nDeref **CodePointer\nCode has a pointer.  deref it
+NesPrgRom:45D4:Handler_B7_DerefPointer:\nDeref **CodePointer\nCode has an inline pointer.\nderef it & put it on the stack.
 NesPrgRom:45D7:L45D7_loop
 NesPrgRom:45EA:L45EA
 NesPrgRom:45ED:L45ED_loop
@@ -840,7 +856,7 @@ NesPrgRom:464F:L464F_loop
 NesPrgRom:4664:L4664
 NesPrgRom:4667::string buffers on stack are always 32-bytes
 NesPrgRom:466F:L466F
-NesPrgRom:4670:Handler_B9_IndexedDeref
+NesPrgRom:4670:Handler_B9_IndexedDeref:\nPush the value at the inline\naddress + word offset from stack.
 NesPrgRom:4676:L4676
 NesPrgRom:4688:L4688
 NesPrgRom:4689:Handler_BC_PushStringToStack_FromTable:Push a string from table\n(addr inline, offset stack)\nto the stack.
@@ -867,11 +883,12 @@ NesPrgRom:473D:Handler_BE_WriteToWordTable:Base addr inline\nOffset in stack\nWr
 NesPrgRom:474B:L474B
 NesPrgRom:474E:L474E
 NesPrgRom:4756:Handler_EA_WriteToStringTable:Base addr inline\nOffset in stack\nWrites 32 bytes from stack
-NesPrgRom:476F:L876F_ShiftStackToArgA:\nArgA = (Stack*2)+Inline
+NesPrgRom:476F:L876F_CalcAddrOffset:\nArgA = (Stack*2)+Inline\n\nCalculate address using inline\nas the base and the stack value as\na word offset.
 NesPrgRom:4772:L4772:\nInline word -> ArgB
-NesPrgRom:4785:L4785
+NesPrgRom:4785:L4785:\nPop word -> ArgA
 NesPrgRom:4790:L4790
-NesPrgRom:4793:L4793:\nPop word -> ArgA
+NesPrgRom:4793:L4793
+NesPrgRom:479B:
 NesPrgRom:47AD:L87AD_IndexedDeref_StringTable:Index into a string table.\nBase addr is inline.\nOffset is on stack.
 NesPrgRom:47B0:L87B0_loop:\ninline arg -> ArgB
 NesPrgRom:47C3:L87C3
@@ -1366,14 +1383,20 @@ NesPrgRom:6A1C:L6A1C
 NesPrgRom:6A4A:L6A4A
 NesPrgRom:6A5A:L6A5A
 NesPrgRom:6A83:Handler_B4
-NesPrgRom:6AB1:Handler_B5
+NesPrgRom:6AB1:Handler_B5_StringCopy:Copy (Word_471A) to (Word_4E) then\nincrement Word_471A by number of\nbytes copied.
-NesPrgRom:6ADD:Handler_B6
+NesPrgRom:6AB6::RTS if < #$60
+NesPrgRom:6AC4:L6AC4_loop
+NesPrgRom:6ADC:L6ADC_rts
+NesPrgRom:6ADD:Handler_B6_4E_to_471A
+NesPrgRom:6AE8:L6AE8
 NesPrgRom:6B09:Handler_AD_Absolute:\nNegates Arg_A if negative
 NesPrgRom:6B11:Handler_AE_Compare:\nIf Arg_A < 0\n  Return -1\nElse If ArgA == 0\n  Return 0\nElse\n  Return 1
 NesPrgRom:6B20:LAB20_ne
 NesPrgRom:6B22:LAB22_eq
 NesPrgRom:6B29:LAB29_mi
 NesPrgRom:6B2D:LAB2D
+NesPrgRom:6B30:Handler_AF_StrToArgA:Takes the first byte of the string\nat $0700 and puts it into ArgA+0.
+NesPrgRom:6B3A:Handler_B0_ArgAToStr:Takes ArgA+0 and writes it to the\nfirst Word of the string at $0700.
 NesPrgRom:6C83:Handler_A8
 NesPrgRom:6CEE:Handler_F2_InfLoop
 NesPrgRom:6E56:Handler_A9:ArgA DataID (used as a lookup into $6C01)\n\nupdates or restores nametable.\nlooks like it works on a portion\nof the screen, not the full screen.
@@ -1721,6 +1744,8 @@ NesInternalRam:04B3:Byte_04B3
 NesInternalRam:04B4:Byte_04B4
 NesInternalRam:04B5:Byte_04B5
 NesInternalRam:0500-05FF:Page_0500
+NesInternalRam:0600-0601:Word_0600
+NesInternalRam:0602-0603:Word_0602
 NesInternalRam:0604:Byte_0604
 NesInternalRam:0605:Byte_0605
 NesInternalRam:0606:Byte_0606
@@ -1782,8 +1807,6 @@ NesWorkRam:0980-098F:Table_6980
 NesWorkRam:0C01:Table_6C01
 NesWorkRam:0C41-0C42:Table_6C41
 NesWorkRam:0CC1-0CC2:Table_6CC1
-NesWorkRam:4880-497F:Table_6880
-NesWorkRam:4A00-4AFF:Table_6A00
 NesWorkRam:8400:Byte_4400
 NesWorkRam:8401-8403:ControllerStuff_4401
 NesWorkRam:8404-8406:ControllerStuff_4404:controller pressed this frame
@@ -1874,6 +1897,8 @@ NesWorkRam:8867-8869:Array_4867
 NesWorkRam:886B:Byte_486B
 NesWorkRam:886C:Byte_486C
 NesWorkRam:886D-886E:Word_486D
+NesWorkRam:8870:Byte_4870
+NesWorkRam:8871:Byte_4871
 NesWorkRam:8873:Byte_4873
 NesWorkRam:8874:Byte_4874
 NesWorkRam:8875-8876:Word_4875