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The Isetta TTL computer is a computer that has no microprocessor. It uses simple TTL circuits as its CPU.
For such a computer it is quite powerful, it can run the free SymbOS operating system with all its applications, and runs ZX Spectrum games and 6502 BASIC.
Specifications:
CPU:
  • Runs Z80 and 6502 code
  • Speed 12.5 MHz (80 nS cycle time)
  • Memory 512 kByte RAM (with bankswitching)
  • Programmable/upgradeable microcode (3 flash chips)
I/O:
  • Video VGA 320 x 200 (64 colors), or 640 x 400 (16 colors)
  • Keyboard and mouse (both PS/2)
  • Sound generator (AY-3-8910 compatible)
  • Real time clock
Connectivity:
  • Micro-SD card (removeable)
  • WiFi on-board (future)
All technical details can be found on the Isetta page on Hackaday.

Sales contact


To order a product, please send us an email, including your address details. We will check the availability of the product and send you our bank account number. We also accept PayPal payments. After receiving the payment, your product will be sent.


Technical Support: In case of technical questions regarding the device you purchased please send us an email quoting the issue and including your contact details.

Pricing includes VAT.
Please add € 12,00 for insured shipping to European countries.
Please add € 22,00 for insured shipping worldwide.

Guarantee is 1 year.

Envionic
Enschede
The Netherlands
Chamber of commerce nr 08169517

Sales terms and conditions:
Conditions for consumers(pdf)
Conditions for non-consumers(pdf)

These sales conditions are currently only available in Dutch. They are the same as the conditions that are advised by the dutch chamber of commerce.

 


The Isetta TTL computer is a computer that has no microprocessor. It uses simple TTL circuits as its CPU.
For such a computer it is quite powerful, it can run the free SymbOS operating system with all its applications, and runs ZX Spectrum games and 6502 BASIC.
Specifications:
CPU:
  • Runs Z80 and 6502 code
  • Speed 12.5 MHz (80 nS cycle time)
  • Memory 512 kByte RAM (with bankswitching)
  • Programmable/upgradeable microcode (3 flash chips)
I/O:
  • Video VGA 320 x 200 (64 colors), or 640 x 400 (16 colors)
  • Keyboard and mouse (both PS/2)
  • Sound generator (AY-3-8910 compatible)
  • Real time clock
Connectivity:
  • Micro-SD card (removeable)
  • WiFi on-board (future)
All technical details can be found on the Isetta page on Hackaday.


The Isetta TTL computer is a computer that has no microprocessor. It uses simple TTL circuits as its CPU.
For such a computer it is quite powerful, it can run the free SymbOS operating system with all its applications, and runs ZX Spectrum games and 6502 BASIC.
Specifications:
CPU:
  • Runs Z80 and 6502 code
  • Speed 12.5 MHz (80 nS cycle time)
  • Memory 512 kByte RAM (with bankswitching)
  • Programmable/upgradeable microcode (3 flash chips)
I/O:
  • Video VGA 320 x 200 (64 colors), or 640 x 400 (16 colors)
  • Keyboard and mouse (both PS/2)
  • Sound generator (AY-3-8910 compatible)
  • Real time clock
Connectivity:
  • Micro-SD card (removeable)
  • WiFi on-board (future)
All technical details can be found on the Isetta page on Hackaday.
Isetta-pcb

Isetta-pcb  29.00 Euro

Isetta-pcb (Isetta circuit board)

This pcb is the heart of a computer, that you can build yourself !
When you order this pcb, you will also get the schematic, a detailed part list, building instructions, and software for the Isetta TTL computer. The part list has the ordernumbers that you need to order the required parts at a global distributor of electronic components (this will cost around 65 euro).

Other items that you need for this computer:
  • VGA monitor with cable and 15-pin connector
  • PS/2 keyboard
  • PS/2 mouse
  • Poweradapter with cable and USB-B connector
  • Micro-SD card (and adapter to write it with your PC/Mac/Linux computer)
  • (optional) Soundbox with cable and 3.5mm plug

For building this, experience in building electronic kits is required.

Isetta-pcb (Isetta circuit board)

Isetta-pcb

Isetta-pcb  29.00 Euro




This pcb is the heart of a computer, that you can build yourself !
When you order this pcb, you will also get the schematic, a detailed part list, building instructions, and software for the Isetta TTL computer. The part list has the ordernumbers that you need to order the required parts at a global distributor of electronic components (this will cost around 65 euro).

Other items that you need for this computer:
  • VGA monitor with cable and 15-pin connector
  • PS/2 keyboard
  • PS/2 mouse
  • Poweradapter with cable and USB-B connector
  • Micro-SD card (and adapter to write it with your PC/Mac/Linux computer)
  • (optional) Soundbox with cable and 3.5mm plug

For building this, experience in building electronic kits is required.

Programmer-pcb

Programmer-pcb  9.00 Euro

Programmer-pcb (Programmer circuit board)

After building an Isetta, you need a programmer to program the microcode into the three flashroms of Isetta. This programmer can program the microcode, or update the microcode, while the flashroms are already soldered on the board. The programmer must be connected to Isetta at one side, and to a Raspberry Pi at the other side.
When the microcode has been programmed, the programmer can be disconnected and is no longer needed (except for a microcode upgrade).

When you order this pcb, you will also get the schematic, a detailed part list, and building instructions for the programmer.
The cost of the parts for the programmer will be approx. 15 Euro.

Programmer-pcb (Programmer circuit board)

Programmer-pcb

Programmer-pcb  9.00 Euro




After building an Isetta, you need a programmer to program the microcode into the three flashroms of Isetta. This programmer can program the microcode, or update the microcode, while the flashroms are already soldered on the board. The programmer must be connected to Isetta at one side, and to a Raspberry Pi at the other side.
When the microcode has been programmed, the programmer can be disconnected and is no longer needed (except for a microcode upgrade).

When you order this pcb, you will also get the schematic, a detailed part list, and building instructions for the programmer.
The cost of the parts for the programmer will be approx. 15 Euro.