MHend

I have found the 16 data/chip lines with a multimeter. I have done it with some help of schematics of a Mega ST and normal ST. I have measured this lines from the 4 (74LS244 and 74LS737) chips (U32, U33, U35 and U36). Can someone tell me if I have found the right connection points? If I understand the schematics well, the data/chip lines lead to the chips I mentioned.

I want to do a memory update, but my Mega ST1 has 8 memory chips. How do I have to connect the data/chip lines? There are only 8 connections in stead of 16. Can anyone help me with this.