IBM 2193 - Manual (Page 171)

Specification tables A-3
Memory map
This table shows the hexadecimal addresses for the system memory regions. You
may use this information for adapter cards that require you to set up memory
regions.
Table 2: Memory map
Address range Description
0~640 KB (000000 ~ 09FFFF) Main memory
640~768 KB (0A0000 ~ 0BFFFF) VGA memory
768~816 KB (0C0000 ~ CBFFFF) Video BIOS Memory
816~896 KB (0CC000 ~ 0DFFFF) ISA Card BIOS & Buffer Memory
896~960 KB (0E0000 ~ 0EFFFF) BIOS Extension Memory
Setup and Post Memory
PCI Development BIOS
960~1024 KB (0F0000 ~ 0FFFFF) System BIOS memory
(100000 ~ Upper Limit) Main memory
(Upper Limit ~ 4 GB) PCI memory
Note:
Upper Limit means the maximum size of installed
memory.
The Main Memory Maximum size is 512MB.