Routines
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CF43: Clear Script Command Flags
Used by the routine at ContinueScriptExecution.
Clears flag bytes in a script command based on the command type and flag bits. Different command types require clearing different numbers of flag bytes to mark them as processed.
Input
IX Pointer to script command data
ClearScriptCommandFlags CF43 LD A,(IX+$00) Read the command flag byte.
Clear the first flag byte if certain flag bits are set, indicating those conditions have been processed.
CF46 BIT 7,A If bit 7 of the command is set, call ClearScriptCommandFlags_ClearFirst to clear one flag byte.
CF48 CALL NZ,ClearScriptCommandFlags_ClearFirst
CF4B BIT 4,A If bit 4 of the command is set, call ClearScriptCommandFlags_ClearFirst to clear one flag byte.
CF4D CALL NZ,ClearScriptCommandFlags_ClearFirst
CF50 AND %00001111 Extract the command type (bits 0-3).
Route to the appropriate handler based on command type to clear the required number of flag bytes.
CF52 CP $01 Go to ClearScriptCommandFlags_ClearFirst when the command is 01.
CF54 JR Z,ClearScriptCommandFlags_ClearFirst
CF56 CP $02 Go to ClearScriptCommandFlags_ClearTwo when the command is 02.
CF58 JR Z,ClearScriptCommandFlags_ClearTwo
CF5A CP $05 Go to ClearScriptCommandFlags_ClearTwo when the command is 05.
CF5C JR Z,ClearScriptCommandFlags_ClearTwo
CF5E CP $07 Go to ClearScriptCommandFlags_ClearOne when the command is 07.
CF60 JR Z,ClearScriptCommandFlags_ClearOne
CF62 CP $06 Go to ClearScriptCommandFlags_ClearOneAlt when the command is 06.
CF64 JR Z,ClearScriptCommandFlags_ClearOneAlt
CF66 CP $04 Compare the command with 04.
ClearScriptCommandFlags_ClearOne CF68 CALL Z,ClearScriptCommandFlags_ClearSecond Call ClearScriptCommandFlags_ClearSecond if the command is 04 or 07.
ClearScriptCommandFlags_ClearTwo CF6B CALL Z,ClearScriptCommandFlags_ClearFirst Call ClearScriptCommandFlags_ClearFirst if the command is 02 04 05 or 07.
CF6E CP $03 See whether the command type is 03.
ClearScriptCommandFlags_ClearOneAlt CF70 CALL Z,ClearScriptCommandFlags_ClearSecond Call ClearScriptCommandFlags_ClearSecond if the command is 03 or 06.
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