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Routines |
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Used by the routines at Process_EnterForestPath, Process_CongratulationsGameOver, Process_EnterLugsCavern, Process_EnterValeOfCuchulainn, Process_EnterInnerCourtyard, Process_EnterEnchantedHills, Process_EnterDeepPoolOfWater, Process_EnterBleakMoorland, Process_EnterCrystalCavern, Process_EnterValeOfRhia, Process_EnterCauseway, Process_GetUrn, Process_GetRope, Process_GetCloak, Process_ThrowMeatToWolves, Process_GiveSaltToGuard, Process_BuyMeatFromTraderWithIron, Process_GiveRomanToDruid, Process_ThrowUrnIntoFire, Process_CaptureRoman, Process_PlaceLadderAgainstPlatform, Process_PlaceSwordOnSlab, Process_KillBear, Process_KillOxWithSword and Action_Sleep.
Adds the points in A to the two-byte BCD score at Score. The low byte is adjusted with DAA; when that addition carries, the high byte increases by one.
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Preserve HL and load the current score from Score.
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| AddToScore | B09A | PUSH HL | Stash HL on the stack. | |||||
| B09B | LD HL,($A7C4) | Fetch the BCD score from *Score into HL. | ||||||
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Add the points into the low score byte and adjust for BCD.
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| B09E | ADD A,L | Add the points in A to the low score byte in L. | ||||||
| B09F | DAA | Decimal-adjust A for a BCD score digit. | ||||||
| B0A0 | LD L,A | Store the adjusted low byte back in L. | ||||||
| B0A1 | JR NC,AddToScore_Store | Jump to AddToScore_Store if the addition did not carry. | ||||||
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The low byte carried, so raise the high score byte.
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| B0A3 | INC H | Increase the high score byte in H by one. | ||||||
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Write the updated score back to Score.
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| AddToScore_Store | B0A4 | LD ($A7C4),HL | Store HL at Score. | |||||
| B0A7 | POP HL | Restore HL from the stack. | ||||||
| B0A8 | RET | Return. | ||||||
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View the equivalent code in;
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