wei@tiger.UUCP (05/29/87)
I tried to send a string 'IN;SP 1;PA 500,1000;' to a HP plotter (7470) using assembly language and using BIOS call 14H with ah=1. The string is a HP-GL command asking the plotter to be initialized and select pen 1 and then goto position 500,1000. The plotter has no reponse at all if I send the string characters one by one succesively. However, it reponds correctly if I put a delay loop ( for about 1ms ) after each character. Is this situation normal? The HP plotter needs some time to put the coming character into its buffer before it can receive the next one ! Or I am doing something wrong ?! HP Wei wei@princeton.UUCP