View allAll Photos Tagged retrocomputing
Commodore Amiga 500, Commodore Amiga 1081 monitor, The Arcade joystick, Hitachi boombox. And the Settlers!!!
Work in progress on the HEX keypad. The generic 6425 push buttons & keytops get BECC self-adhesive vinyl lettering used by modellers. The key switches are mounted on conventional copper strip veroboard, with the IC sockets installed on Protoboard-3U.
11 keyboards, 10 computers, 35 years of technology, all still very actively in use. The interdata model 70 might be gone by 2010.
Almost two decades before the iPad, there was another portable ARM-based device named the A4; it was Acorn's attempt at an Archimedes laptop. Apparently it was a commercial failure; it was expensive, the platform never took off, and the screen connection was prone to breaking. Still, it looks aesthetically on a par with anything Apple were doing around then.
As of June 2011, I am actively developping a Text adventure game for vintage computers.
The development machine is a Commodore vic-20 (seen here), but the game could eventually be ported to a couple of other platforms.
I really did like the Apple IIe line. This was the first model Apple I had the opportunity to try, and the funny "return" key stuck in my mind for - literally - decades afterward.
Il Comune di Forte dei Marmi, in collaborazione con Lilio Tarabella e il suo ‘Tarabella Hotel’, ci hanno offerto la possibilità di esporre, nella splendida cornice del Fortino di Piazza Garibaldi, una selezione delle macchine ‘storiche’ più significative nel percorso evolutivo di Apple.
Al Fortino sono arrivati l’Apple Lisa, il TAM (Twentieth Anniversary Macintosh), il Portable, il Macintosh 128k, i Newton, le Quicktake, il Set Top Box, l’Apple II, l’Apple //c, l’eMate, e tanti altri pezzi rarissimi del Museo All About Apple.
Yes, Lemon Computer really existed!
Lemon was an Italian 'clone' brand of the early 90s.
Bruce Bethke in his 'Headcrash' novel joked about Lemon computers. Clearly he didn't know that in Italy Lemon Computers really existed.
Obvously, I have removed the label before sending the monitor to recycling facility.
Running "Impossible Mission". Foto di Francesco De Francesco - www.flickr.com/photos/godzillante/ - www.facebook.com/studioquis
The retrocomputing stack as it stands now.
Commodore 128DCR
Texas Instruments TI-99/4A
Radio Shack TRS-80 MC-10 Micro Color Computer
Atari 800XL
Radio Shack TRS-80 Model III
8BASIC (C) is a BASIC interpreter developed by manufacturer G.G in 2010 for the homemade Z80/AM95 8 bit NANO COMPUTER.
8BASIC doesn't have line numbers but uses line labels which may be referenced by control flow statements.
VARIABLES
Statements use variables to keep track of numbers or strings or labels.
Variables and labels must consist of only one alphabetical character.
So the maximum number of GOTO/GOSUB's arguments is 26 and the labelled addresses are precompiled into RAM in a separate table during the program editing.
The range of the 26 numeric values which can be entered or stored, lies between -9.99999 and +9.99999 x 10^5 (always displayed in 8-char fixed format: six digits plus sign and decimal dot). Variables are anyway stored in RAM in floating-point representation during program editing when declared (precomplilation) or during interpretation for the intermediate results. The precision of intermediate calculations depends on the APU 9511 capability (1 bit sign, 7 bit two's complement exponent and 24 bit of mantissa).
During editing, just after having selected the correct statement, you can easily change any of the 26 letters of each variable, navigating through the alphabet using the telephone-like keypad.
For example the generic statement "Z=X+Y" which performs the addition, can be easily modified in
"A=X+Y" or
"A=A+A" or
"Z=X+Z" or
"A=A+X" etc..
It is also easy to handle any algebraic expression using multiple 8-chars functions managing intermediate results.
For example Z=2*A+15*C can be written as:
" LET X="
"+15.0000" ;X=15
"X=X*C " ;X=15*C
"B=A+A " ;B=2*A
"Z=B+X " ;Z=2*A+15*C
Each of the 26 text variables may contain max eight alphanumeric characters and symbols, as per the complete DL2416 character set.
But you may build texts with more chars by concatenating strings stored in consecutive letters (variables), with the last string ending with the "#" char: text will be displayed by scrolling right-to-left. So technically the max size of a displayed string is 207 characters.
Here the typical "Hello Word" program which displays the string "Hello World" in an infinite loop:
" LET A$="
"HELLO WO" ; A$="HELLO WO"
" LET B$="
"RLD# " ; B$="RLD"
" "F": " ; F label
"PRINT+A$" ; display from right to left A$&B$ = "HELLO WORLD"
"GO TO F " ; goto F and loop
" END "