| Editor's Notes | These computers always have a surprise for you. Or at least the programs do. I thought the last QZX was all fixed up with templates so that all I had to do was add the articles. Well when it printed out the headers and footers were missing. | |
| QZX Friends | KF5GG – George renewed and sent a contribution to the postage fund. KHAFM Raymond renewed and sent a contribution to postage fund. James Powell renewed and sent a contribution to the postage fund. Arnold Nieuwenhoff renewed and did not sent a contribution to the postage fund. | |
| ZX81 RAM Extension | I am not too sure why anybody would want to use this circuit to extend their RAM when QZX has been offering a free 16 K RAM box for several months now, but the circuit on the following page can be used to add just the amount of RAM that you wish and it is quite easy to build. | Timex/Sinclair 1000 |
| ZX81 RAM Test | The short program at the end of this article can be used to test the RAM of you ZX81 type Sinclair computer. It does a quite thorough check of all the RAM installed in your system except for that being used by the program. | Timex/Sinclair 1000 |
