2068 Code Bytes #7

Seventh installment of the Z80 series, presenting the map-cursor and map-editor routine for CONQUEST. Covers PRCURS and PRCUR (cursor initialization and main loop), PIXLOC (screen address from XY coordinates), ATTR (attribute address calculation), PRCHA (print character), INTJOY (joystick-to-cursor translation), TRANS (cursor-to-map coordinate conversion), PUTX (place map element), DOIT (dispatch table using JP(HL)), and four scroll routines (SCROLL L/R/U/D). Full assembly listings.