Linkage Kit Manual V6-00 - Fujitsu

APPENDIX
B.4 Extended Segment Address Record (HEX16/HEX32)
Type: 02
If extended segment address code appears, the address of each byte data of the
following data records is calculated according to the following formula.
( ( PA x 0x10 ) + ( ( DA + DP ) MOD 0x10000 ) ) MOD 0x100000
• PA: (e) field value of the record
• DA: (c) field value of the data record. Here, this value is a relative address.
• DP: Value indicating the data position in the (e) field of the data record calculated by
setting the position of the first data to 0.
■ Extended Segment Address Record (HEX16/HEX32)
Figure B.4-1 Extended Segment Address Record (HEX16/HEX32)
: 0 2 0 0 0 0 0 2 p1 p2 p3 p4 s1 s2
(a) (b) (c) (d) (e) (f) (g)
(e) :
This is a paragraph address and the actual 2-byte data is represented as 4-byte ASCII code.
In the above figure, p1 indicates the high-order digits.
(c) :
This field is not used and normally 0 is set.
If extended segment address code appears, the address of each byte data of the following data records is
calculated according to the following formula.
[( PA x 0x10 ) + [( DA + DP ) MOD 0x10000]] MOD 0x100000
- PA: (e) field value of the record
- DA: (c) field value of the data record. Here, this value is a relative address.
- DP: Value indicating the data position in the (e) field of the data record calculated by setting the
position of the first data to 0.
This is the same method used for calculating the physical address in i8086. With the addition of
extended segment address record, up to 20-bit addresses can be represented.
For the data records which appear before the extended segment address record, the address is calculated
with the above PA setting as 0x0000.
350