This page is served by the small web server running on a Sinclair ZX81(zx81-siggi.endoftheinternet.org)
zx81-siggi.endoftheinternet.org
This page is served by the small web server running on a Sinclair ZX81
http://zx81-siggi.endoftheinternet.org/index.html
22 comments
dont forget Spud!
http://d116.com/spud/
"busy - MEFISDOS filesystem currently in use. Please try a little bit later again ..."
Gotta love this message. It conveys the feeling that this thing is for real.
Gotta love this message. It conveys the feeling that this thing is for real.
Is there an HTTP response code for RAM pack wobble?
Ugh ... that edge card connector and the RAM's vertical orientation was horrible. I tore mine out of the original case, found a real (mechanical) keyboard, built a better power supply and added a weed-eater style battery. I could move it around (unpowered) for quite a while before it lost it's memory and there were several times I took it to the local TSUG without having to reload the program I wanted to show off.
A local jeweler designed what he called a "winky board" and sold it to thousands of TS owners. It provided an AGC for both the audio input and audio output as well as shaping circuits to eliminate noise from the signal. This little board actually made storing programs on cassettes reliable.
Ah ... memories!
EDIT: It was a Winky Board - There are references here:
- ftp://ftp.worldofspectrum.org/pub/sinclair/technical-docs/SinclairHardwareFactSheet.txt
- http://forum.tlienhard.com/TS1000/www.ts1000.us/cgi-bin/yabb...
A local jeweler designed what he called a "winky board" and sold it to thousands of TS owners. It provided an AGC for both the audio input and audio output as well as shaping circuits to eliminate noise from the signal. This little board actually made storing programs on cassettes reliable.
Ah ... memories!
EDIT: It was a Winky Board - There are references here:
- ftp://ftp.worldofspectrum.org/pub/sinclair/technical-docs/SinclairHardwareFactSheet.txt
- http://forum.tlienhard.com/TS1000/www.ts1000.us/cgi-bin/yabb...
I have a ZX-81 (that I built from the kit version) and two TS-2000's in my basement, perhaps if you clustered them, the page could survive the HN effect.
EDIT: Two of them have the 16KB RAM expansion modules if the system is memory limited.
EDIT: Two of them have the 16KB RAM expansion modules if the system is memory limited.
16KB! How luxurious, I had the standard 1KB. I saved my pocket money but by the time I could afford the expansion pack the industry (and I) had moved on.
I had a ZX-80 with upgraded ROM (to ZX-81) such that the onboard memory (1k) was insufficient to run the memory test program you got with the computer. Luckily, I had the 16kB expansion module. The worst part was that my monitor was a US TV set (most Australian TVs didn't have UHF support) but it was NTSC, so to get a usable image I had to do crazy things with the vertical hold.
That poor Sinclair ZX81 can't handle HN load! It's probably done more work today than it has its entire lifetime.
Cool. I'll have to put mine back in service. It's currently being used as a door stop ;-)
Is this real? I wonder how the networking gets in/out? AFAIK, there's no port for that.
Also, does anyone have a cache? Looks like it couldn't cope with the traffic.
Also, does anyone have a cache? Looks like it couldn't cope with the traffic.
An interesting design choice to roll their own with a bare wiznet chip instead of a little "DIP-like" module like the WIZ811.
This design sounds very close to the arduino ethernet shield design. Wonder if they're doing TCP offload and all that in the wiznet. If you buy a $20 or whatever '811 and attach the correct wires to the correct ports and provide 3.3 volts that basically IS the $50 arduino shield so this is pretty well trodden ground.
The wiznet stuff can be advanced enough that you're kinda stretching the truth by describing it as being on the internet. All the "on the internet" stuff is being done by a microcontroller and the speccy is just talking to another SPI device.
At one point I had a SBC6120 PDP-8 "on the internet" but not really. The PDP-8 thought it was talking to a serial terminal, that's all that was done on the PDP-8 / OS-8 side to be "on the net". There are plenty of little $100 boxes that terminate an ethernet connected telnet session on one side of the box and speak plain ole RS-232 serial on the other side of the box and that was what I was using and the speccy thing sounds about the same except terminating port 80 connections. Its not like putting windows 3.0 "on the net" using all kinds of device drivers and stuff deep in the innards of the OS.
Maybe "internet accessible" is a better phrase.
Its still a cool project aside from terminology. I'm sorta on and off trying to hook a wiznet module to what amounts to a modern S100 CP/M box as my slow ongoing retro experiment. Why? Because I can.
This design sounds very close to the arduino ethernet shield design. Wonder if they're doing TCP offload and all that in the wiznet. If you buy a $20 or whatever '811 and attach the correct wires to the correct ports and provide 3.3 volts that basically IS the $50 arduino shield so this is pretty well trodden ground.
The wiznet stuff can be advanced enough that you're kinda stretching the truth by describing it as being on the internet. All the "on the internet" stuff is being done by a microcontroller and the speccy is just talking to another SPI device.
At one point I had a SBC6120 PDP-8 "on the internet" but not really. The PDP-8 thought it was talking to a serial terminal, that's all that was done on the PDP-8 / OS-8 side to be "on the net". There are plenty of little $100 boxes that terminate an ethernet connected telnet session on one side of the box and speak plain ole RS-232 serial on the other side of the box and that was what I was using and the speccy thing sounds about the same except terminating port 80 connections. Its not like putting windows 3.0 "on the net" using all kinds of device drivers and stuff deep in the innards of the OS.
Maybe "internet accessible" is a better phrase.
Its still a cool project aside from terminology. I'm sorta on and off trying to hook a wiznet module to what amounts to a modern S100 CP/M box as my slow ongoing retro experiment. Why? Because I can.
Would that work on a ZX81?
*was
Not anymore, it isn't!
I am soooooooo happy - where is the source code !
:-)
He can ship it to you as an mp3.
You can do similar things on the Arduino with an Ethernet shield. There a single IC which contains a hardware implementation of the TCP/IP stack which takes the load of the AVR itself.
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For anyone else that don't know what a ZX81 is:
http://en.wikipedia.org/wiki/Sinclair_ZX81
I found one of these at a thrift store the other day for $4, fun to see what people are doing with it now.
Oh the beautiful times I had with my ZX Spectrum and how much you could do with such little
I've been hitting refresh for ages and I still get nothing :-)
yes, with a loose definition of "served".
:-)
And it's down...
[deleted]
... and it's down.
not anymore!
Here are a few more.
(http://d116.com/ace/)
(http://www.edcheung.com/awards/pic2k/code.htm)
(http://www.kyllikki.org/hardware/wwwpic2/)
Sadly, a bunch of my links are dead now.