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Questo divisorio è interamente costituito da involucri originali di cassette di giochi anni '80. Almeno tre quarti di questi nomi mi sono noti...
This screen is entirely composed with original cases of '80s video game cassettes. At least three quarters of these names are known to me...
MK3880P-10 (Z80 CPU)
§ Purple Ceramic
§ 2.5 MHz
§ -40° to +85°C
§ Data code: 1980
Here is protected by a transparent plexiglass window
Mostek cut a deal with a startup Zilog, in which Mostek provided fab resources to manufacture the Zilog microprocessors in return for second sourcing rights to the Zilog family. Mostek produced MK3880, the Zilog Z80 and a series of Z80 support chips, until Zilog built their own fab.
MK3880P-10 (Z80 CPU)
§ Purple Ceramic
§ 2.5 MHz
§ -40° to +85°C
§ Data code: 1980
Here is protected by a transparent plexiglass window
Mostek cut a deal with a startup Zilog, in which Mostek provided fab resources to manufacture the Zilog microprocessors in return for second sourcing rights to the Zilog family. Mostek produced MK3880, the Zilog Z80 and a series of Z80 support chips, until Zilog built their own fab.
Valentino with a 1974 Digital PDP 11/34 (left) and a 1968(?) HP 21005 (right) @ University of Salerno
This board:
1) Second 64K (8kx8) SRAM: CDM6264E3 (datacode 1982)
2) Serial RS232 Interface with 8251 USART
3) Memory mapped 8 bit parallel IN/OUT with LS374 latched outputs and LS244 inputs with one interrupt line
4) Memory mapped co-processor C8231A: 16 bit floating point arithmetic unit running @ 2.5 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).
TFK CQX 87 KG
CQX87K
Vishay Telefunken
Seven-Segment Numeric LED Display - Com Ka
Package Style (Basic)=DIP
Number of Characters=2
Color=Red
Character Height (mm)=13
Peak Wavelength (m)=660n
Iv Min.(cd) Luminous Intensity=300u
@I(F) (A) (Test Condition)=20m
V(F) Max.(V) Forward Voltage=2.0
@I(F) (A) (Test Condition)=20m
I(F) Max. (A) Forward Current=25m
Status=Discontinued
Package=DIP
STG COSMAC ELF 2000 with 256MB on compact flash, on a Wyse WY-120 display - so much better than a Windows PC terminal program!
This program (written in Visual Basic) let my Z80 NANO COMPUTER communicate with an IBM PC Computer. You can choose either a serial or a parallel transmission for both the directions.
This 60 sec. video demo will show both Serial and Parallel transmission (TX and RX respectively)
In the demo the software will import the Assembly code from a third-party PC Z80 Simulator and then transmit it from the PC to the Z80 NANO COMPUTER ram. This trasmission in this demo is serial (RS-232). A 16 bit checksum is calculated on both the machines, transmitted to the Z80 machine and there checked. Serial transmission allows also a parity checking control. Then the program will re-import data from the Z80 to the PC, via parallel transmission this time. I have choosed a slow 10 ms handshaking to let you see the data while imported. A 16 bit checksum is calculated on both the machines, transmitted from the Z80 to the PC and here checked.
Hexadecimal data are manually copied from the program and pasted in a notepad to show you that data have been sent and received in a correct way.