Sinclair ZX80 / ZX81 / Z88 Forums

Paul wrote: Which software do you use? Maybe I could show you some beginner tricks?

http://fritzing.org

/Martin

Paul wrote:I would like to say that all power lines should be much thicker.
kind regards Paul

I'm n00b with electronics. Do you mean all lines, or e.g. 5V and GND?

/Martin

Now the PCB design is complete. The board (10 cm x 5 cm) has been ordered in China. It looks quite confusing but this is my first board, and all connections have been made with autoroute. Now I need to order the ics, sockets, connectors, resistors, diodes and capacitor. Keyboard will be connected wi...

On the keyboard it would be nice to have keys for cursor that enables both [Shift] combined with [5], [6], [7] and [8]. As the keys have 4 pins one set can be connected to [Shift] and the other to e.g. [5]. http://img.dxcdn.com/productimages/sku_158030_4.jpg Do I need a component that delays e.g. [5...

XorA wrote:Almost certainly Resistor Network!

Ah! I found this component

/Martin

XorA wrote:Almost certainly Resistor Network!

Is that a component, or just a schematic way to show multiple resistors connected?

/Martin

Hi :) I found Wilf Rigter's project to build an external connected keyboard like the version from Memotech. I've found this schematic http://www.user.dccnet.com/wrigter/index_files/ZXKBDv3_files/image003.gif on this page: http://www.user.dccnet.com/wrigter/index_files/ZXKBDv3.htm Unfortunately there...

I've read ZX91 from http://zx81.de/andre/.

In the first issue it's stated that the magazine is monthly and will last for at least a year.

How come there's only 5 issues?

Anyone know what happend?

Great read!

/Martin

Hi :) I would like to modify a BASIC program via BASIC (or ML). It’s easy to read from the BASIC program, as that starts at address PROGRAM 16509/407D. It should also be relatively simple to modify the program, as long as it’s modifying from one char to another. The problem arises when you want to i...