MCMANIS%USC-ECLC%sri-nic@sri-unix.UUCP (01/12/84)
From: Chuck McManis <MCMANIS%USC-ECLC@sri-nic> Latest trick to getting a nice raster from a ZRT-80 : The H-Sync and V-sync are driven directly by a 74LS86 Xor gate and may not be able to drive your surplus terminal monitor. If so a transistor buffer must be added. Additionally, the H sync pulse is only 15us wide, our monitor requires 22-35 us for the width. The solution is to add a 74121 one shot as a pulse stretcher. Everything else is fine, now if I could get VT100 emulation out of it. --Chuck -------