But this card you showed doesn’t have even the expansion slots it’s a CPU card with memory. You could even consider a board with expansion slots - to take a video card, disk controller, etc. And so did the DataPoint 2200 the year before. The very first microcomputer ever made, the Q1, in 1972, had a keyboard and teletype-like output. If what you want to call a microcomputer is merely a card with a CPU and memory, well, I guess that’s fine, but it wouldn’t be what most people reading this article would understand by one. Posted in Microcontrollers, Retrocomputing Tagged 8 bit, ESP32-Pico-D4, eZ80, microcomputer, microcontroller, SBC Post navigation It honestly looks like a lot of fun, and we’re looking forward to seeing what people do with this. is also encouraging people to build and sell their own Agon Lights, which seems pretty cool too. The project is open source and all the design files are available, or you can get a PCB populated with all the SMD components and just put the through-hole parts on. The lengthy video below goes into all the details on the Agon Light, including the results of benchmark testing, all of which soundly thrash the usual 8-bit suspects. There’s also a pin header for 20 GPIOs as well as I2C, SPI, and UART for serial communication. There’s no word we could find of whether the ESP32’s RF systems are accessible it would be nice, but perhaps unnecessary since there are both USB ports and a PS/2 keyboard jack. It also has an audio-video coprocessor, in the form of an ESP32-Pico-D4, which supports a 640×480 64-color display and two mono audio channels. The heart of the Agon Light is an eZ80 8-bit, 18.432 MHz 3-stage pipelined CPU, which is binary compatible with the Z80. The machine has a single PCB that looks about half as big as an Arduino Uno, and sports some of the same connectors and terminals around its periphery. Or is it? over at The Byte Attic has introduced an interesting machine called the Agon Light, an 8-bit SBC that’s also a bit like a microcontroller. But raw computing power isn’t really the point of retrocomputing. Sure, an 8-bit machine is fun for retro gameplay and reliving the glory days, and there certainly were some old machines that were notably faster than the others. When the need for speed overcomes you, thoughts generally don’t turn to 8-bit computers.
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