1 - Al Kossow's Bitsavers

TMS47648192·WORD BY 8·BIT READ·ONLY MEMORYPROGRAMMING DATAPROGRAMMING REQUIREMENTS: The TMS4764 is a fixed program memory in which the programming is performed byTI at the factory during the manufacturing cycle to the specific customer inputs supplied in the format below. The deviceis organized as 8192 8-bit words with address locations numbered 0 to 8191. The 8-bit words can be coded as a 2-digithexadecimal number between 00 and FF. All data words and addresses in the following format are coded in hexadecimalnumbers. In coding, all binary words must be in positive logic before conversion to hexadecimal. Q1 is considered the leastsignificant bit and Q8 the most significant bit. For addresses, AO is least significant bit and A 12 is the most significant.The input media containing the programming data can be in the form of cards or EPROMs.Either 16K, 32K, or 64K EPROMs can be used, or any combination of them.The following is a description of how the cards must be formatted, should they be used instead of EPROMS.PROGRAMMING INSTRUCTIONS -64K ROMEach code deck submitted by customer shall consist of the following:1. Title Card2. Comment Cards3. Start of Data Card4. Data CardsThe cards shall be standard 80 column cards with the information in the following format:Card Column1 - 567,89 - 1415TITLE CARDInformationThe word 'TITLE' shall be punched in these columns.BlankThe letters 'ZA' shall be punched in these columns.Leave blank. A special device code number will be assigned by Texas Instruments.(left justified)Blankt/)Q)CJ.S;Q)C~oa:16 - 30313233 - 363738 - 40Customer's Part Number, if required. (left justified)BlankCustomer's Part Number to be included as part of device symbolization.Options:Y = YesN = NoBlankType of PackageOptions:C = ceramicP = plasticB = chip on boardBlankTEXASINSTRUMENTSPOST OFFICE BOX 225012 • OALLAS, TEXAS 752657-17