- page 5-1
- the 16K dynamic RAM chip
- page 5-2
- RAM timing signals from the timing generator
- page 5-3
- RAM connections in the apple
- page 5-4
- schematic: apple ii RAM
- page 5-5
- the RAM address multiplexor
- page 5-6
- the functions of the address multiplexor
- page 5-7
- MPU/scanner equivalent address bits
- the arithmetic of video scanner memory addressing
- page 5-8
- 128-byte video memory segments consist of three 40-byte sections, each mapped into a different part of the video screen
- page 5-9
- TEXT/LORES scanning
- page 5-10
- TEXT/LORES displayed memory map
- page 5-11
- TEXT/LORES video scanning map
- page 5-12
- HIRES memory areas
- HIRES scanning
- page 5-13
- mixed mode scanning
- page 5-14
- HIRES displayed memory map
- page 5-15
- HIRES video scanning map
- page 5-16
- page 5-17
- page 5-18
- page 5-19
- refreshing RAM in the apple
- screen memory usage summary
- page 5-20
- RAM address multiplexor hardware
- the video scanner row address assignments
- page 5-21
- schematic: the address multiplexor
- page 5-22
- CAS signal example
- RAM timing in the apple ii
- page 5-23
- timing example: a 6502 read cycle to address $1000
- page 5-24
- timing example: a 6502 write cycle to address $1000
- page 5-25
- page 5-26
- the 16K RAM card
- timing example: a 6502 read cycle to address $C010
- page 5-27
- schematic: the 16K RAM card
- page 5-28
- page 5-29
- page 5-30
- 16K RAM card address bus commands
- page 5-31
- page 5-32
- upgrading apples to 48K RAM
- page 5-33
- 16K dynamic RAM chips
- page 5-34
- bank switching the motherboard RAM
- page 5-35
- schematic: bank switching motherboard RAM
- page 5-36
- reading video data from a program
- page 5-37
- screen memory scanning
- page 5-38
- page 5-39
- integer BASIC listing: underline program
- page 5-40
- assembler listing: underline program
- page 5-41
- page 5-42
- multiple RAM card configurations