Address
(Hex)
Mode Function
400-48F
ROM
BIOS
See
BIOS Listing
490-4EF
Reserved
4FO-4FF Reserved as Intra-Application
Communication Area
for
any application
500-5FF Reserved
for
DOS and BASIC
500
DOS
Print Screen Status Flag Store
O-Print Screen Operation
Not
Active
or Successful
Print Screen Operation
1-Print Screen In Progress
255-Error Encountered during Print Screen
Operation
504
DOS
Single Drive Mode Status Byte
510-511 BASIC BASIC's Segment Address Store
512-515
BASIC Clock Interrupt Vector Segment:
Offset
Store
516-519
BASIC
Break Key Interrupt Vector Segment:
Offset
Store
51A-51D
BASIC
Disk Error Interrupt Vector Segment:
Offset
Store
Reserved Memory Locations
5-10
System BIOS
To Next Page
Loading...
