Samsung S3C84E5 user manual Interrupt Vector Addresses, Interrupt Vector Area, HEX 7FFFH 3FFFH

S3C84E5/C84E9/P84E9 INTERRUPT STRUCTURE

INTERRUPT VECTOR ADDRESSES

All interrupt vector addresses for the S3C84E5/C84E9/P84E9 interrupt structure are stored in the vector address area of the internal 16/32-Kbyte ROM, 0H–3FFFH/0H–7FFFH (see Figure 5-3).

You can allocate unused locations in the vector address area as normal program memory. If you do so, please be careful not to overwrite any of the stored vector addresses (Table 5-1 lists all vector addresses).

The program reset address in the ROM is 0100H.

(Decimal)

32,767

16,383

255

32-Kbyte Memory Area

16-Kbyte Memory Area

Interrupt

Vector Area

(HEX)

7FFFH

3FFFH

0100H RESET Address

FFH

0

00H

Figure 5-3. ROM Vector Address Area

5-5