ZVT SPU-800

ZVT SPU-800 Also called Systém Pořizování Údajů,TP8.Designed by Ing. Pavel Sedláček.It was manufactured from 1979 (it could have been introduced, the development was definitely taking place) by ZVT B.Bystrica. Hardware is based on 74181 @ 10 MHz.Operating systems running on the computer: SPUAS,MKOS-1.

This topic contains doubts or inaccuracies that need to be corrected. More information follows below.

Parts of this topic may be machine translated.

Contents

TP8 processor cards

The whole processor is built on the TTL 74xx series, so there is no microprocessor in the modern sense.

The front panel bears the RPL designation (control panel), it is connected to the TP8 bus by means of individual wires (wrapped joints).

The processor pattern will probably be some HP calculator, I estimate the bus - signals /SIH, /CEO, SP -Scratchpad can be found in the HP9830 or in the patent of US4012725A.

Expanders of the bus

Expander - a device designed to expand the capacity of memory or the number of peripheral devices connected to the TP 8 terminal processor if more than 4 such units need to be connected. One expander allows you to expand the rear connection with another 8 free positions. Up to 4 expanders can be directly connected to the TP 8 terminal processor.

Expander cards:

Universal basting plates

It is a plate with a field of interconnects with a metric pitch of 2.5mm. According to the photos, these boards were probably quite actively used for various specific applications, where it was not appropriate to use any existing peripheral board.

(it is also possible to use TNS-Bastl, which, however

Memory cards

They connect to the ZPP part of the SPU-800 as other peripheral cards

The cards can be addressed throughout the 64kB of the processor address space. At least one P1K card usually contains a boot ROM, for example to load another code from the punching tape or SKP (KPP-800).

According to available unverified information on the SPU-800, there was also a set of cards with DRAM memory (PMT 7CB 006 275, GAD 7CB 006 276 and RSP 7CB 006 277).

Peripheral card

They are connected to the ZPP part of the SPU-800. The selected select code is standard, in the eight system (SCO instruction parameter).

file ZPD 1200

Part of the SPU 800 system, designed for input or output of digital information in tube code from remote Terminals ZPD 1200 or Files ZPD 1200 after fixed or commutated telephone lines with high level of transmission against errors.

File of receiving parallel modem

- Part of the SPU 800 system, designed for one -way parallel data transmission of a commutated network at synchronous speed of up to 20 characters/s. The device is suitable for data collection and transfer systems from several places in one receiving center - data processing location.

set of serial signal converters

Part of the SPU 800, designed for serial data transmission of telephone or telegraph lines speeds from 50 to 1200 BD.

Description of the front panel

LED indication:

Functions (buttons):

The processor is displayed dynamically the program Counter, ACC, Phase, Carry (LEDs flicker)

ZPP bus

The bus is in the I/O range compatible with 8 -bit TNS.

Mi [0..7] Memory in
MO [0..7] Memory Out
MW Memory Write
What [0..3] I/O Select Code
SO [0..3] I/O Status Out
SI [0..3] I/O status in
Di [0..7] I/O DATA IN
To [0..7] I/O Data Out
/SIH Service inhibit
/CEO Control-enable-output

Modern development

Use SPU-800

terminal workplace

Martin Bílý shared the use of the SPU-800 at CTU FEL in 2023: "I knew that, say, an instructed user sometime around 1985. 1200. Sharing slow shared lines caused users to use it only in need, when they did not want to wait to release "normal" terminals.

For me known for me, it was an extension of the number of user workplaces of the ICL-2904 minicopper. The communication line was a piece of cable, the modems for both ends were one of those workplaces above each other. I don't know why modems were used there. Perhaps the ICL computer required the existence of a full and actual serial interface with all control signals and their timeouts.

I have no idea what was the typical use of the SPU-800, how and what it was programmed. In my case, the assembly worked on the imaginary rotation of the net switch. "

In the history of the use of computer technology at the FE BUT, the classroom was built on the SPU 800 system ... The terminal classroom was connected to the ADT 4316 mini-computer. The TP8 processor, 9 expanders that could increase the number of connected devices and individual workplaces.

It can be said that the development of the terminal classroom at that time showed a typical feature - our workplace had to develop the necessary technical and software. It was a time when devices appeared on the market whose deployment in a specific application was solved by their users themselves. Our workplace was able to realize such activities. "

data acquisition

Control computer

EPROM programmer (see Amaro in references)

Technological processes management

data acquisition

Peter Šindler lists in private correspondence (2024/05) to use the SPU-800:

"The SPU-800 Bolo in Žari nad Hronom in an aluminar plant, where the SIEť SPU-800 (AJ 10 pcs) was connected to the SM 4-20 and the SPU-800 lobed to the aluminum furnace, where it was gained or the so-called skin-effect- The service reacted.

computer games

Although it may sound strange, there were computer games on the SPU-800. Among other things, the game sketch for moving cil , in which these instructions are:

You're a watchdown satellor. You have a laser cannon and an energy source for 10 shots. Your role after the alarm is to be destroyed by shooting 10 targets, which gradually appear in the first line of the screen and move from left to right. The cannon is located on the last line to the right. It is fired with the "0" key. According to their abilities, choose the speed of the target: 1 - cosmic greener, 2 - average pilot, 3 - old machr.

This game also exists for 8 -bit TNS computers (TNS SC, etc.).

Connection with other systems

There was a LPT2SPU program to connect to the PC world.

Furthermore, the SPU-800 was connected to the ADT 4500 and ICL.

Software

Known software:

test application Countdown

Program for a punch tape that is uploaded by a standard Loader from the SDP card to 0170000 (0xF000) and counts slowly on the Display ACC frontpanel from 0377 to 0000, Base64 ENCODED

📋Adwaofaa/wblvv // ywaaaaaaaaaaaaaaaaaa
Aaaaaaaaaaaaaanivgmvtstah/9tl
LHPMU7EWB9STFWOYMAFYVA

Inaccuracies/doubts related to the topic

Unknown predecessor - "inspirational model" (probably from Hewlett-Packard)



If you have information on the ''Unknown Derived Computers'' chapter.



Insecure controller with DRAM memory.



If anyone has more information, please get in touch.


Computers derived from  ZVT SPU-800

The following computers were inspired by or derived from ZVT SPU-800:
References



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