System Memory Map; System Memory Map (Increments Of I6Kb) - IBM 5150 Hardware Reference Manual

System Memory Map
X'OOOOO'
16 TO 64KB
ON SYSTEM
265KB R/W MEMORY
BOARD
PRESENT
SYSTEM
I/O CHANNEL
MAX MEMORY
ADDED MEM
MAX 192KB
FUTURE
EXPANSION
384K MEMORY
FUTURE
EXPANSION
128KB RESERVED
128KB
GRAPHIC/DISPLAY
BUFFER
EXPANSION
MEMORY
216KB
40KB
BASE SYSTEM
ROM
X'FFFFF'
Figure 11. SYSTEM MEMORY MAP
3/4 MEG
MEMORY
ADDRESS
SPACE
256KB ROM
AD 0 R ESS
SPACE
2-25