Routines
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46460: Graphic layout routine: (251) Process graphic layout data at following address and return when complete
Functionally equivalent to CALL instruction. Read current WORD (address) from graphic layout data, load graphic layout data at that address into primary display buffer and return to previous position. Upon returning (via routine at 46418 when a 255 is encountered), the position of the cursor (i.e. the value in HL) is reset to the base coordinates as stored at 34281 - see instruction at 46422.
Used by the routine at 46218.
Input
IX Address of first parameter in current graphic layout data instruction
Output
B Do-not-recalculate-display-buffer-address flag (0)
46460 LD C,(IX+0) Load BC with destination graphic layout data address
46463 LD B,(IX+1)
46466 PUSH IX Store IX (current position in graphic layout data)
46468 PUSH BC Load IX with destination graphic layout data address
46469 POP IX
46471 CALL 46003 Load graphic layout data from this new location into primary display buffer (recursive call)
46474 POP IX Restore IX (previously stored position in graphic layout data)
46476 LD B,0 Prepare to recalculate display buffer address
46478 JP 45999 Advance graphic layout data pointer by two bytes and read / process next data
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