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Computers have been developing so rapidly that a lot of achievements are being forgotten already. However, there is an increasing number of enthusiasts that preserve some of the knowledge in keeping up historic machines.
C-C-G, The Computer-Cabinett-Göttingen, is an initiative to collect and exhibit some of the most interesting specimen of home and business calculating machines. We are open to new members and ideas, so please visit our Web Page.
As a good introduction to historic computing see the article (PDF) by Burnet and Supnik in Digital Technical Journal vol. 8 no. 3 (1996).
I will eventually post some contributions here that are useful for maintainance, use and public display of these machines. I am also planning to offer data conversion for anybody that has old tapes, cartridges etc. and wants to know what's on them.
Software wanted. Although many people have historic computing websites, mostly all they show is pictures. We want usable software! If you know about online pools for historic software or if you have written some yourself, please make it available and tell us about it!
Data links PC to historic machine are currently available for
HP-85, Epson HX20 and Commodore C64, we are looking for your help with
everything else!
| Available Document | Content | |
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Restoration Protocol (lots of nice photos) |
The IBM 3741 was not a computer but a floppy disk reading/writing station. We undertook a restoration at the Padua Computer Museum . |
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Gnuplot terminal driver vt105.trm (works with 3.7.1) | For those who want to test the graphics option. Build your own Gnuplot with the latest sources from www.gnuplot.org | modified Gnuplot sources | Gnuplot 3.7.1 sources including the VT105 driver |
| history and pictures | More details about the graphics option | |
| minc-11.pdf (700KB) | MINC Book 2 - Read the inroduction to see in what context the terminal was used! | |
| link to vt100.net | Paul Williams has all about DEC Terminals. History, Handbooks, etc. | |
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link to description (italian) |
An RS232 interface will shortly appear here :) |
| wiring diagram | four .tif scans in a tar archive | |
Modem CX-21 |
hx20wiring.txt | Serial cable wiring diagram for HX20-PC data transfer. |
| hx20man.pdf (8MB) | Complete manual (German) | |
| SIDHA-Writer.tar | Powerful commercial text editor. Multipart BASIC and machine code. With installation instructions | |
| SIDHA-Dialog.tar | Commercial terminal program. With installation instructions for multipart code | |
| koch.bas | Recursively draws the fractal curve described by Helge von Koch in 1903. | |
| hx20bas.tar.gz | Example programs (including terminal) from ftp://ftp.epson.com/hxpxqx/ | |
| BASICsamples.tar | Collection from Albert Walter, including AI algorithm demo game. | |
| hx20directory.tar | Epson original microcassette managing software | |
| DUMP.BAS grab.c roms.bas |
Memory dump software. Can be used to produce images of the Epson firmware. | |
| hx20disass.tar | Disassembler in BASIC | |
| rom image Assembler Manual (pdf) Debugger Manual (pdf) |
Assembler and Debugger written by Julian Wald "Burn to a 27C128 eprom and place in the expansion unit." |
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| link to J. Wald's page | knowledgeable source (memory map booklet etc.) | |
| tecnical data (German) | contains all pinouts | |
| description (German) | by www.zock.com | |
| original ad | So it was! | |
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hp85topc.txt | HP85-PC data transfer description. Print to IEEE 488 bus and capture with National Instruments GPIB card and software. |
| alternative transfer description | From another site. Loads of information, ROM images etc. | |
| apfel.bas | Simple program to calculate and draw the Mandelbrot set. Requires Advanced Programming ROM. | |
| Tape archive | Collection of authentic BASIC programs | |
| Museum link | ||
| professional help | Parts sales | |
| www.series80.org | There is Software!!! | |
| tecnical data | by another enthusiast | |
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 complete schematic |
A 400dpi scan of the A2 schematics (2MB). Courtesy of Padua Computer Museum. |
| view of the ram chips | This baby has optional ram! | |
| m10_prg.zip | BASIC classics from Christian Meis | |
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kostenaufteilung.gif (50KB) umrechnung.gif sort.gif opamp.gif (140KB) |
BASIC programs written by Christian Wilmes. "Umrechnung" does Time:Counter conversion for tape recorders. |
| MCS48_sharp.txt | MCS48 controller program for Sharp data transfer and printer emulation. By Olaf Kaluza. | |
| link to museum | wav2bin utility | |
| link to yagshi's pocket computers | Emulator software and Cross-Assembler | |
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X1541.ZIP | The original 1541 Floppy to PC parallel port data link. Includes wiring, runs in DOS (timing-sensitive). |
| TRANS64.ZIP | A full grown file manager based on X1541, you can use the PC as a fileserver for the C64. | |
| Link to CCS64 | The best program ever written for PC. C64 emulation 100%, including Floppy LED. | |
 TestDrive II | The ultimate car game. A complete collection with downloads and history. | |
| Link to www.c64games.de | Don't look here for more games, look there! | |
| C64 joystick adaptors:
German (www.schaltungen.de) English (very good) |
If you play C64 games with an emulator, you still want the old digital joysticks! These documents describe interfaces to the game port. | |
| PC Gameport:
Pinout and wiring Programming |
To build your own joystick adaptor, to connect two joysticks at once or to understand the driver. | |
| Another capable link. | Tape conversion and more. |
