M16C/80 Series Searching Array
Contents
1. of array ROH Column element of coincidence data R1L Search data R1L Does not change R1H R1H Indeterminate gt R2 R2 Unused R30 R3 Unused AO Start address of array AO Address of coincidence data Al A1 Indeterminate SECTION PROGRAM CODE ORG VromTOP ROM area ARRANGE CMP B 0 ROL JEQ ARRANGE_NG gt No rows of array are set MOV B ROH R1H Saves columns JEQ ARRANGE_NG gt No columns of array are set MOV W A0 A1 MULU B ROH ROL Calculates array size ARRANGE_10 CMP B R1L A0 JEQ ARRANGE_20 gt Coincidence data found ADD L S 1 A0 ADJNZ W 1 RO ARRANGE_10 gt Checks next data ARRANGE_NG FSET Z Search failed JMP ARRANGE_ EXIT ARRANGE_ 20 PUSH W AO Saves address of coincidence data SUB W A1 A0 Creates address difference from start to coincidence data MOV W AO RO i DIVU B R1H Decomposes coincidence data into row and column elements INC B ROL Corrects rows INC B ROH Corrects columns POP W AO Restores address of coincidence data FCLR Z Search succeeded ARRANGE_ EXIT RTS f END MAEC MCU M16C 69 0207 R1 0 3 tENESAS M16C 80 Series Renesas Technology Corp Searching Array 5 0 Reference MCU Technical Information Homepage http www infomicom maec co jp indexe htm or http www mdece com http www mitsubishichips com products mcu index html or your local Web Site Technical Support E mail support ap2. Renesas Electronics does not warrant that such information is error free Renesas Electronics assumes no liability whatsoever for any damages incurred by you resulting from errors in or omissions from the information included herein Renesas Electronics products are classified according to the following three quality grades Standard High Quality and Specific The recommended applications for each Renesas Electronics product depends on the product s quality grade as indicated below You must check the quality grade of each Renesas Electronics product before using it in a particular application You may not use any Renesas Electronics product for any application categorized as Specific without the prior written consent of Renesas Electronics Further you may not use any Renesas Electronics product for any application for which it is not intended without the prior written consent of Renesas Electronics Renesas Electronics shall not be in any way liable for any damages or losses incurred by you or third parties arising from the use of any Renesas Electronics product for an application categorized as Specific or for which the product is not intended where you have failed to obtain the prior written consent of Renesas Electronics The quality grade of each Renesas Electronics product is Standard unless otherwise expressly specified in a Renesas Electronics data sheets or data books etc Standard Computers office
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5. ata 1 RiL Search data Does not change R1H Indeterminate Used to save column size R2 gt Unused R3 iz Unused AO Start address of array Address of coincidence data A1 Indeterminate Used to save start address Z flag Search succeeded failed Usage precautions MAEC MCU M16C 69 0207 R1 0 1 tENESAS M16C 80 Series Renesas Technology Corp Searching Array 3 0 Flowchart ENTER Yes Row setting of array 0 No Column setting of Yes array 0 No Calculate entire area of array Coincidence data Yes Set address difference from start to coincidence data Decompose coincidence data into row and column elements Yes Search succeeded Clear Z flag Search failed Set Z flag I EXIT Move to next data Search finished MAEC MCU M16C 69 0207 R1 0 2 tENESAS M16C 80 Series Renesas Technology Corp Searching Array 4 0 Programming Code M16C Program Collection CPU M16C 80 series skkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk VromTOP EQU OFE0000H Declares start address of ROM Title Searching array Outline Searches for data from two dimensional array of given size within 255 x 255 bytes Stack amount used 2 bytes Notes Success or failure of search is returned by Z flag Input 9 gt Output ROL Row size of array ROL Row element of coincidence data ROH Column size
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10. l maec co jp or your local support E mail address A private e mail address should NOT be used Data Sheet M16C 80 group Use the latest version on the Homepage http www infomicom maec co jp indexe htm User s Manual M16C 80 group Use the latest version on the Homepage http www infomicom maec co jp indexe htm MAEC MCU M16C 69 0207 R1 0 4 2tENESAS Renesas Technology Corp Keep safety first in your circuit designs Mitsubishi Electric Corporation puts the maximum effort into making semiconductor products better and more reliable but there is always the possibility that trouble may occur with them Trouble with semiconductors may lead to personal injury fire or property damage Remember to give due consideration to safety when making your circuit designs with appropriate measures such as i placement of substitutive auxiliary circuits ii use of non flammable material or iii prevention against any malfunction or mishap Notes regarding these materials These materials are intended as a reference to assist our customers in the selection of the Mitsubishi semiconductor product best suited to the customer s application they do not convey any license under any intellectual property rights or any other rights belonging to Mitsubishi Electric Corporation or a third party Mitsubishi Electric Corporation assumes no responsibility for any damage or infringement of any third party s rights originating in the use of
11. logy Corp tENESAS Renesas Technology Corp APPLICATION NOTE M16C 80 Series Searching Array 1 0 Abstract This program searches for specified data from a two dimensional array of a given size maximum 255 x 255 bytes 2 0 Introduction This program searches for specified data from a two dimensional array of a given size maximum 255 x 255 bytes Set the start address of the array in AO the row size of the array in ROL the column size of the array in ROH and the search datain RiL The address the row element and the column element of the coincidence data are output to AO ROL and ROH respectively Information on whether the search has succeeded or failed is output to the Z flag In this program the overall size of the array is calculated the specified data is searched from the entire array region and a difference from the start address to the search address is obtained before decomposing the coincidence data into row and column elements Z Meaning 0 Search succeeded Search failed no coincidence data found row setting of array 0 or column setting of array 0 1 Subroutine name ARRANGE ROM capacity 41byte Interrupt during execution Accepted Number of stacks used 2byte Register memory Input Output Usage condition ROL Row size of array Row element of coincidence data 1 ROH Column size of array Column element of coincidence d
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