Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 Instrukcja Użytkownika Strona 33
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5 INSTRUCTION SET
S1C33 FAMILY C33 PE CORE MANUAL
EPSON
25
5.6 Addressing Modes with ext
The immediate specifiable in 16-bit, fixed-length instruction code is specified in a bit field of a length ranging
from 4 bits to 8 bits, depending on the instruction used. The
ext instructions are used to extend the size of this
immediate.
The ext instructions are used in combination with data transfer or arithmetic/logic instructions, and is placed
directly before the instruction whose immediate needs to be extended. The instruction is expressed in the form
ext imm13, in which the immediate size extendable by one ext instruction is 13 bits and up to two ext
instructions can be written in succession to extend the immediate further.
The ext instructions are effective only for the instructions for which the immediate extension written directly
after ext is possible, and have no effect for all other instructions. When three or more ext instructions have been
described sequentially, an undefined instruction exception (
ext exception) occurs before executing the extension
target instruction.
When an instruction, which does not support the extension in the ext instruction, follows an ext, the ext
instruction will be executed as a
nop instruction.
5.6.1 Extension of Immediate Addressing
Extension of imm6
The imm6 immediate is extended to a 19-bit or 32-bit immediate.
Extending to a 19-bit immediate
To extend the immediate to 19-bit quantity, enter one
ext instruction directly before the target instruction.
Example: ext imm13
add
%rd,imm6
Extended immediate
0 0 0 0 0 00000000
31 19 18
imm13
6
imm6
5 0
Bits 31–19 are filled with 0 (zero-extension).
Extending to a 32-bit immediate
To extend the immediate to 32-bit quantity, enter two
ext instructions directly before the target instruction.
Example: ext imm13 (1)
ext imm13 (2)
sub %rd,imm6
Extended immediate
imm13 (1)
31 19 18
imm13 (2)
6
imm6
5 0
Extension of sign6
The sign6 immediate is extended to a sign-extended 19-bit or 32-bit immediate.
Extending to a 19-bit immediate
To extend the immediate to 19-bit quantity, enter one
ext instruction directly before the target instruction.
Example: ext imm13
ld.w
%rd,sign6
Extended immediate
SS S S S S SSSSSSSS
31 19 18
imm13
6
sign6
5 0
The most significant bit “S” in imm13 that has been extended by the ext instruction is the sign,
with which bits 31–19 are extended to become signed 19-bit data. The most significant bit in
sign6 is
handled as the MSB data of 6-bit data, and not as the sign.
- S1C33 Family C33 PE 1
- CONTENTS 5
- 1 Summary 9
- 1.2.1 Instructions 10
- 1.2.2 Registers 11
- 2 Registers 12
- Processor Status Register 13
- 2 REGISTERS 14
- EPSON 14
- 2.4 Stack Pointer (SP) 15
- 0xFFFFFFFF 16
- 0x00000000 16
- 0x00060000 18
- 2.9.2 Special Registers 20
- Byte 38-bit data 21
- SSSSSSSS 22
- Example: ld.w %rd,%rs 24
- Example: ld.w %rd,[%rb] 24
- Example: ld.w [%rb],%rs 24
- 4 Address Map 25
- 5 Instruction Set 26
- 5 INSTRUCTION SET 27
- Table 5.1.2 Symbol Meanings 27
- 5.4 Instructions Removed 29
- 5.5.1 Immediate Addressing 30
- Extension of imm6 33
- Extension of sign6 33
- Adding displacement to [%rb] 34
- 00000000 35
- Data + imm26 36
- New address 37
- 5.10 Multiply Instructions 42
- Before execution of pushn 45
- Before execution of push 46
- Before execution of pop 46
- Branch destination address 47
- 5.16 Swap Instructions 53
- 5.17 Other Instructions 54
- 6 Functions 55
- 6.2 Program Execution 56
- 6 FUNCTIONS 57
- Added instructions 59
- 6.3.1 Priority of Exceptions 60
- TTBR[31:10] 61
- Vector code (10 bits) 61
- 6.3.3 Exception Handling 62
- 6.3.4 Reset 62
- 6.3.6 NMI 63
- 6.3.7 Software Exceptions 63
- 6.3.10 ext Exception 64
- 6.4 Power-Down Mode 65
- 6.5 Debug Circuit 66
- 6.6 Coprocessor Interface 67
- 7 Details of Instructions 68
- IE C V Z N 100
- (after execution) 156
- Sign bit 166
- 8 716 1524 23 173
- (in Order of Codes) 177
- Class 4 (1) 179
- Class 4 (2) 179
- Class 5 (1) 179
- Class 5 (2) 179
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