RCA 301 Programmer's Reference Manual
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2 Card Punch Normal (CPN)General DescriptionThis instruction enables the Punch Unit of the Card Reader-Punch to punch one or more 80-column cards frominformation contained in the HSM using the Normal Mode.FormatOperation — 2N Card Punch Mode&0 (Zero)BinaryTranslateA Address — HSM address of first character to be punched.B Address — HSM address of last character to be punched.** When punching in the binary mode, the number of characters defined by the A and B addresses must be a multiple of 160.Direction of Operation Standard LocationLeft to right. 0202 - 0205Outline of OperationA start signal is sent to the Card Punch Unit. The Card Punch Unit punches the information from HSM betweenand including the locations addressed by the contents of the A and B Reg'sters, punching up to 80 columns to acard. Punching of the last card is completed when the A and B Registers are equal. The contents of the A Registerare then incremented by one.When the binary punch mode is specified (N = &), the A Register denotes the memory location of the characterto be punched in column 1, rows Y through 3. Each information bit results in a hole in the card (2° = row Y, 2s =row 3). Successive characters representing rows Y through 3 are also punched from HSM with column 80 beingpunched from (A), + 79. The character present at (A)( + 80 is punched into column 1, rows 4 through 9 (2° =row 4, 2"' = row 9). Successive characters representing rows 4 through 9 are also punched from HSM with column 80being punched from (A); + 159.The card punched is read concurrently with the punching of the succeeding card to insure the accuracy ofpunching.Final Register Contents(A)r = Address of location one to the right of the last character in HSM punched.(B), = (B);TimingCards may be punched at the rate of 250 cards per minute.VIII-16 |
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