;*********************************************************** ; ; THIS IS AN EXAMPLE PROGRAM FOR THE COP420C PROCESSOR. ; IT IS TAKEN FROM PAGE 9-122 OF THE 1982 COPS MICROCONTROL- ; LERS DATABOOK, AND AFTER ONLY FORMAT MODIFICATIONS FOR ; CROSS-32, IT IS PASSED ON AS AN EXAMPLE, FREE OF CHARGE, ; BY UNIVERSAL CROSS-ASSEMBLERS. ; THE COP400 TABLE CONTAINS THE INSTRUCTIONS USED BY THE ; COP420C/COP421C AND COP320C/COP321C SERIES OF ; MICROCONTROLLERS. THE TABLE MAY OF COURSE BE TAILORED ; FOR ANY ONE MICROCONTROLLER IN PARTICULAR. CPU "COP400.TBL" ; CPU TABLE HOF "INT8" ; HEX OUTPUT FORMAT ;*********************************************************** ; ; TITLE REPEX ; EXAMPLE ROUTINE TO WRITE THE DIGIT IN REGISTER 0, 0 ; INTO THE FIRST ADDRESS SPACE IN STORE BLOCK 1. ; TELEPHONE NUMBERS OF 20 DIGITS ARE CHOSEN TO ; DEMONSTRATE THE USE OF A LOOK-UP TABLE TO GENERATE ; THE START ADDRESS. THUS, BLOCK 1 START ADDRESS IS ; HEX 15, WHICH WILL BE STORED IN A LOOK-UP TABLE ; BEGINNING IN ROM LOCATION 0F1 (MUST BE IN SAME 4 ; PAGE SEGMENT OF ROM). WRITE: CLRA OGI 0 LBI 2, 15 ;POINT OF BLOCK NO. IN RAM (B) AISC 15 ;LOAD F INTO ACCUMULATOR LQID ;CONTENTS OF F1 PUT IN Q LBI 2, 14 ;WANT ADDRESS COPIED IN RAM (B) CQMA ;ADDRESS UPPER NIBBLE IN 2, 14 LBI 2, 13 X 0 ;ADDRESS LOWER NIBBLE IN 2, 13 LEI 4 ;ADDRESS OUT TO 74C921 OGI 7 ;ST, WE, CEL GO LO LDD 2, 0 ;PUTS FIRST DIGIT IN ACC CAMQ ;DIGIT OUT TO 74C921 DATA PORT OGI 0 ;DATA STROBED IN LEI 0 ;TRI STATE L ORG 0F1H DFB 15H END