Zilog Z8F0130 - Manual (Page 64)

eZ8
™
CPU Core
User Manual
UM012820-0810 eZ8
™
CPU Instruction Set Summary
49
binary format must be followed if you prefer manual program coding or
intend to implement their own assembler.
Example 1
If the contents of Registers 43h and 08h are added and the result is stored
in 43h , the assembly syntax and resulting object code is:
Example 2
In general, when an instruction format requires an 8-bit register address,
that address can specify any register location in the range 0–255 or, using
Escaped Mode Addressing, a working register R0–R15. If the contents of
Register 43h and Working Register R8 are added and the result is stored
in 43h, the assembly syntax and resulting object code is:
Refer to the Zilog Product Specification specific to your Z8 Encore!
device to determine the exact register file range available. The register
file size varies, depending on the device type.
Table 8. Assembly Language Syntax Example 1
Assembly Language Code ADD 43h, 08h (ADD dst, src)
Object Code 04 08 43 (OPC src, dst)
Table 9. Assembly Language Syntax Example 2
Assembly Language Code ADD 43h, R8 (ADD dst, src)
Object Code 04 E8 43 (OPC src, dst)