Memory Map


This table shows how the RPD-95 calculator "memory" is initially set up and allocated.


Byte
Address
(hex)

Usage

0000
007F
System RAM (128 bytes)
0080
1FFF
System reserved area
2000
23DF
System RAM (992 bytes)
23E0




282F
File 1
File 2     File space
File 3     (5200 bytes)
.
.
Catalog
+
|
|
|
|
|
|
| User Memory
|  (shown with
|  default
|  partitions)
|
|
|
|
|
|
+
3830



3C17
Step 0000
Step 0001   Program memory
.                 (1000 bytes)
.
Step 0999
3C18




3FFF
Register 124
.                Data registers
.                 (1000 bytes)
.
Register 001 (B)
Register 000 (A)
4000
BFFF
Cartridge Port (32K bytes)
C000
DFFF
System ROM (4 pages, 8K bytes each)
E000
F7FF
System reserved area
F800
FFFF
System ROM (4K bytes)


Back