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SH7721 Datasheet(PDF) 298 Page - Renesas Technology Corp

Part # SH7721
Description  Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
PDF  1524 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7721 Datasheet(HTML) 298 Page - Renesas Technology Corp

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Section 7 Exception Handling
Rev. 3.00 Jan. 18, 2008 Page 236 of 1458
REJ09B0033-0300
• Example 2: Repeat loop consisting of three instructions
LDRS
RptDtct + 4
; [A]
LDRE
RptDtct + 4
; [A]
SETRC #4
; [A]
RptDtct:
RptDtct
; [B] A repeat detection
instruction is an
instruction prior to a
repeat start instruction
RptStart: RptDtct1
; [C1][Repeat start instruction]
RptDtct2
; [C2]
RptEnd:
RptDtct3
; [C2][Repeat end instruction]
instrNext
; [A]
• Example 3: Repeat loop consisting of two instructions
LDRS
RptDtct + 6
; [A]
LDRE
RptDtct + 4
; [A]
SETRC #4
; [A]
RptDtct:
RptDtct
; [B] A repeat detection
instruction is an
instruction prior to a
repeat start instruction
RptStart: RptDtct1
; [C1][Repeat start instruction]
RptEnd:
RptDtct2
; [C2][Repeat end instruction]
instrNext
; [A]
• Example 4: Repeat loop consisting of one instruction
LDRS
RptDtct + 8
; [A]
LDRE
RptDtct + 4
; [A]
SETRC #4
; [A]
RptDtct:
RptDtct
; [B] A repeat detection
instruction is an
instruction prior to a
repeat start instruction
RptStart:
RptEnd:
RptDtct1
; [C1][Repeat start
instruction]== [Repeat end
instruction]
instrNext
; [A]



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