williams-et-al-1983-apple-ii-computer-graphics

CHAPTER 3-SYSTEM MONITOR-MEMORY TRICKS 19Other Monitor TricksThere are other Monitor commands, such as the command you use whenyou return to BASIC by typing 3D0G . The 300 is the address marking thebeginning of a DOS routine, and the G says GO. However, the value ofthose other commands to the BASIC-oriented graphics programmer is marginal,so we will not discuss them further here. If you are interested, referto Chapter 3 of the APPLE II Reference Manual for more detail.VocabularyBufferMemory MapMonitorMOVEPrompt CharacterExercises1. Use the Monitor to examine the contents of locations $96YJYJ through$96FYJ.2. Examine memory locations $AA6YJ and $AA61 using a single Monitorcommand.3. Examine location $A4 without displaying the contents of any otherlocation.4. Load $FF' s into locations $CYJ5 and $CY,6.5. Move the contents of $4YJYJ through $7FF to the block of memorywhich begins at $61YJYJ.6. Load $YJYJ into each location from $2YJYJYJ through $J FFF.