location still does not verify, programming stops and the failure is reported. Intelligent #3- In this method, the margin pulse is 4 times the preceding total accumulation. If after 15 ms of pulses verification has not been achieved, a 60 ms pulse is tried. If the location now verifies, programming moves on. If not, the EPROM has failed. For any of the Intelligent programming methods, the EPROM Supply (VCC) is set to 6 volts. PMW's from 4 to F have the meanings given In the following table: PMW INT METHOD TEST PULSE TOTAL ACCUMULATION* 4 1 variable 12 ms. 5 1 variable 25 ms. 6 1 variable 50 ms. 7 1 variable 100 ms. 8 2 .25 ms. 75 ms. 9 2 .50 ms. 75 ms. A 2 1.0 ms. 75 ms. B 2 2.0 ms. 75 ms. C 3 .25 ms. 100 ms. D 3 .50 ms. 100 ms. E 3 1.0 ms. 100 ms. F 3 2.0 ms. 100 ms. * = the maximum time that can be accumulated at a location before an error Is reported. If you add $40 to the PHW, that is set bit 6 high, the programming is altered in this respect: The PROMENADE turns off Vpp before attempting to read back the EPROM. This slows down programming; but it is advisable in few cases. For example: PC000,C7FF,0,28,47 This command programs a 27C16 with data from C000 through C7FF. Another example: P4000,BFFF,0,E6,46 This programs an OKI 27256 with the specified data. -24-