Routines
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F15F: Collect one byte from a command list
Used by the routine at F171. Collects a byte from a character's current command list and returns it in A.
Input
H Character number (0xD7-0xE5)
F15F PUSH HL Save the character number
F160 PUSH DE
F161 LD L,$16 Byte 0x16 of the character's buffer holds the offset of the point reached in the command list (relative to the start)
F163 LD E,(HL) Pick up this offset in E
F164 INC (HL) Increment the offset
F165 INC L Collect the start address of the command list from bytes 0x17 and 0x18 of the character's buffer into HL
F166 LD A,(HL)
F167 INC L
F168 LD H,(HL)
F169 LD L,A
F16A LD D,$00 DE=offset
F16C ADD HL,DE Point HL at the byte to collect from the command list
F16D LD A,(HL) Pick up the byte
F16E POP DE
F16F POP HL Restore the character number to H
F170 RET
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