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Running an 1802 machine code routine using EF1 sync (not interrupts) to display 36 characters from a message buffer.
Un Minivac 601 del 1961, elaboratore a relé realizzato per scopi educativi da Claude Shannon, uno dei "padri" della moderna teoria della comunicazione.
A Minivac 601, a relay-based computer made for education purposes in 1961 by Claude Shannon, one of the "fathers" of the modern theory of communication.
My fourth training Z80 board, completed with vent power supply, Z80 ceramic purple Mostek-Zilog CPU, ROM 8K (Bios plus main programs), RAM 8 + 8K (SRAM or NVRAM) , SIO RS-232 USART 8251, PIO 8255, 25 pin IBM PC Standard Parallel Port bidirectional nibble mode interface, additional memory mapped 8bit parallel I/O, E2/Eprom programmer via HW bit-to-bit or SW with ZIF sockets, programmable tone generator (555 as orgue), Hex keyboard (74C923), Hex LED Display, ASCIII 16 segment LED Display (DL2416), 3 Clocks types ( 2.5MHz; 4 Hz; instruction stepping), dip switches for interrupt Zero Mode, Windows Visual Basic Software for serial & parallel data transmission between the Z80 and an IBM Personal Computer. Quite all components are vintage original 1980's
The IBM PC XT (Extended Technology) from 1983. Machine type was first 5160. The IBM XT computer has 128 KB RAM, a 360 KB double-sided 5¼ inch floppy disk drive and a 10 MB Seagate ST-412 hard drive. The motherboard has an Intel 8088 microprocessor running at 4.77 MHz.
Arduino UNO provides 6 bit data and the necessary handshaking logic for a vintage Burroughs SSD0132-0040 Self-Scan gas plasma display c.1976. The row of LED blinky lights, aside from being mesmerizing, shows the state of the interface logic with delays built into the sketch to help diagnostics (on my first attempt I had the 6 data bits in reverse order). This pic shows clearly the dot matrix pattern making up each character.
Ten years ago today I received my first e-mail. This is a photo of my setup at the time. I bought the 33.6k modem with money from my first job and signed up to Argonet using a voucher in Acorn User. The modem was £94 and it cost £10 per month not including the phone call costs! I used to look forward to weekends because the calls were cheaper then so I could spend more time online. Wasted teenage years? Just think, I could have been drinking cheap cider in the park. Needless to say, my third e-mail was spam. Some things don't change.
Burroughs TD700 Self-Scan early gas plasma display screen and keyboard, Design Level 4 c1973. The keyboard is partially working, I suspect a logic issue on the bottom two rows.
The "£" symbol above the letter "E" and the small "Shift Lock" & "Tab" keys in place of a large "Tab" key mark this as a UK "data preparation" variant.
The first sign of a bad C439 is a vertical stripe on the left side of the screen. More info: trmm.net/VT100
kids learning goto statements in basic ;) (eng: "you can't use it - you can't use it - you can't use it" ...)
Vintage graphics I made in 1997 for a version of the 'El Diablero' Adventure Game.
Screen Text:
'I AM NEXT TO A POOL OF BLUISH WATER.
I SEE:
NOTHING
OBVIOUS EXITS ARE:
WEST, SOUTH.
WHAT DO I DO NOW?'
The Original game was based on the Castenada books and was written for the Dragon 32 by Ken Kallsh and is available online to play using a Dragon32/64 emulator.