IBM reference cards

These are some old reference cards I used way back when. Especially the leftmost one proved to be very useful in debugging ‘dumps’…

So far, I processed these (also linked from the menu on top):

• System/370 Reference Summary
• System/370 DOS/VS POWER/VS Reference Summary
• CICS Master Terminal Operator Reference Summary
• IBM Reference Card | COBOL
• more to come…