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6809 single board computer. The basic idea is to take the instruction to be executed and store it in a buffer in RAM. The UNIBOARD was designed by Compacta Inc. I entered my own schematic using the EasyEDA web-based CAD software. Jul 29, 2015 · The Single Board Computers. It would run the same FLEX operating system as the SWTPC computers. Tick generator provides 10ms tick signal for testing with interrupt. Also, the 6809 (and OS-9) were used in the Fairlight CMI. My requirements were to support the 6809, run on Linux, and be freely available. I used smARTWORK to design the double-sided, NON-through-hole-plated PCB. The complete computer board would fit on a wire wrap Vector board the size of a floppy drive. The Ensoniq Mirage used a 6809 if Oct 18, 2022 · Here’s a nice page with lots of hardware and software resources for 6809 enthusiasts… 6809 Single Board Computer … including I settled on using MICROSOFT® Extended BASIC for the TANDY® Color Computer 2. Apr 13, 2019 · A 6809 Single Board Computer: The MC6839 Floating Point ROM Implementing floating point math was a challenge with 8-bit microprocessors. Jan 27, 2019 · The basic specs are a 6809 processor running at just under 2 MHz, 32K of static RAM, 16K of EPROM, and a 6850 ACIA-based serial port. Feb 14, 2019 · Everything you need to port CUBIX to your own 6809 system. Slightly modified version of "Grant's 6-chip 6809 computer" by Grant Searle. The sbc09 package contains an emulator of a 6809-based single board computer that runs under UNIX. After some thought, it looked feasible, although more challenging as the 6809 has a larger and more complex instruction set than the 6502. Aug 26, 2021 · My intention for this project was to design a single-board computer that would provide me with: Compact design on an inexpensive 2-layer 4″ x 4″ PCB 1. Full information and ROM images can be found on Grant's page. Recent updates include breadboard VGA Video controller. We can enter the 6809 instructions using hex key directly. Microbox II 6809 Single Board Computer. The design is simple, potentially buildable on a breadboard, and had been reproduced by other people, so I decided to give it a try. Reasonably complete, has a decent library. Dec 23, 2018 · A simple 6809-based single board computer that can run a port of the BASIC from the Radio Shack Color Computer. Jul 19, 2022 · So I built up the Grant Searle / Jeff Tranter Single board 6809 computer on a breadboard: If you haven't checked out the minimal 6809 on their sites its a good read both of them, and definitely more educational than anything you'll get from me! I put together the reset / clock divider we talked about in my last update. The retro 6809 SBC is a homebrew 8-bit computer running BASIC as made in the 80's but with sound and more modern peripherals like PS/2 keyboard, VGA output and SD card. May 30, 2016 · I've been working on a 6809 Single Board Computer design and I wanted to share it with the community. 84 MHz Microprocessor unit using MC68B09 or HD63B09 Nov 10, 2022 · Notable among the personal computers using a 6809 are the Fujitsu FM-7, FM-77, and FM-77AV. No surface mount components at all The SST-6809 maintains 6809 Microtan System from Tangerine, a multi-board 6809 computer on single height Eurocards SC09 from Arcom, a 6809 CPU board with STE bus EC-6809 (p. Feb 8, 2019 · Assembling code by hand is possible, but for any program of non-trivial size, cross-compilation is the way to go, even for 8-bit processors like the 6809. in California that produced the CP/M operating system). WDC sent me the W65C02SXB and the W65c816SXB, two single board computers based on the 65C02 and the 65C816, respectively. 6809 Simulator/Emulator ===== sbc09 stands for Lennart Benschop 6809 Single Board Computer. I have a higher priority project that superceeds this one so things may go somewhat slowly. Feb 5, 2019 · A 6809 Single Board Computer: Disassembler and Thoughts on the 6809 As a project to use my 6809 SBC and learn more about 6809 assembly language programming, I wrote a disassembler that can run on the board. This 6809 Single Board Computer runs Microsoft Extended BASIC and designed by Grant Searle. Some time in the 1980's (judging by the latest date code, about 1985) I bought and assembled this "Uniboard" by "Compacta Incorporated". You can try it out using the D6809 simulator above. MEZ6809RAM. When working with my 6809 single board computer I went looking for a suitable cross-assembler. I built a version of this using PCBs and wire wrap in 1981. The Microbox II featured: 1-2 MHz 68B09E microprocessor 60KB DRAM (supported by a 6883/SAM chip) 8KB EPROM (4KB mapped out when running FLEX) 2 RS-232 serial ports (WD2123 DUART) Aug 23, 2016 · Re: 6809 Single Board Computer project « Reply #39 on: September 07, 2016, 07:33:58 pm » Ah, yes, you are correct, the floppy controller was the 6843, how silly. in the UK, but manufactured in the USA by Digital Research Computers of Texas (not the Digital Research Inc. minimal ICs employed to make a useful stand alone system no PAL, GAL, or other programmable support logic ("glue") IC's, instead only standard 74xx MSI logic parts entirely through hole, DIP IC construction consistent with a vintage design. In Apr 14, 2019 · For my 6809 single board computer I wondered if I could do the same for the 6809 processor. It contains a assembler and simulator for the Motorola M6809 processor. I've attached the schematic as a pdf. Binaries that can be loaded from the SD card and run by the monitor. Now re-built using the original Monitor ROM on solderless breadboards. The Nanocomp 6809 was a simple microcomputer design published in Wireless World magazine in 1981, with a 25 key keypad and 6 digit 7 Segment LED display. The 16kB ROM is monitor program. It contains all the programs needed to work with the emulator, such as the emulator itself, an assembler, a monitor program, a BASIC interpreter, a Forth interpreter, several example programs and several tools needed to build the programs. Aug 20, 2017 · I only became aware of this thread when the recent post brought it into view, where the phrase "6809 Single Board Computer" caught my eye. The board held the 6809 CPU, 2K EPROM, floppy disk controller (WD 1771), and two serial ports (6850 and 6551). The Single Board Computer The SBC running on an AT&T terminal Files bin. The Microbox II single board computer was a product of Micro Concepts in England, and was designed by Dave Rumball. I wanted a low cost kit like computer based around the 6809, with a very simple expansion bus. DIY for Hobbyist or Education: Single Board Computer 6809 (bare and BASIC computer versions) 6809 single board computer. Contribute to valgamaa/6809-SBC development by creating an account on GitHub. The 6809 was a wonderful upgrade to the UNIBOARD 6809 Single Board Computer. 電脳伝説さん(@vintagechips)のEMUZ80が出力するZ80 CPU制御信号をメザニンボードで組み替え、6809と64kB RAMを動作させることができます。 This repo contains the on going work of building a simple Basic 6809 CPU Single Board Computer. I would be interested in hearing from anyone interested is helping out, or just has an opinion to share. Neat. > A video board (with capabilities slightly above a VT100) exists on paper Nov 29, 2001 · My 6809 Design of 1990 (Or: How to build a small computer on a budget, and lessons I learnt on how to actually make it work) I built this single board computer in 1990, while I was studying at the University of Stellenbosch. CUBIX is a simple command OS (DOS for the 6809!), but does have some nice features, over 100 system calls implemented via SWI. 50, in French) on two single height Eurocards, 64KB DRAM, serial and parallel ports, floppy disk controller, 6845 for 24x80 text display, booted FLEX [1] [2] The 6809 Microprocessor kit is a single board microcomputer designed for self learning the operation of the 6809 microprocessor. Design goals: Cost - try to keep board footprints small (this was hard, further minimization with surface mount parts would be the way to go even lower) Minimal - keep the focus on simplicity, very few chips and very simple memory map Extendable Mar 31, 2002 · This board also came in > handy in initial testing of the processor board: I managed to squeeze a > 9 byte loop into these 64 switches that made a LED on the processor > board (address decoder output) blink when running properly. . My first iteration was a dual floppy drive system in a box about 6 inches 6809 Single-Board Computer. The kit provides 32kB RAM for program testing. The system has 32 KB RAM for a MPU clocked at 8 MHz. Aug 17, 2024 · MC68B09 (MC6809) Single Board Computer Bare PCB. This is a PC hosted cross compiler for 6809 embedded systems. basic — TSC 6800 Micro BASIC Plus ported to the 6809; fig6809 — 6809 FIG Forth; hello — The obligatory "Hello World" space — TSC 6800 Space Voyage ported to 6809; tu58 — TU58 emulator; doc May 31, 2018 · Chapter 1 Introduction. The early version of BASIC for the 6502-based Apple 1 and Apple 2 series written by Steve Wozniak only supported 16-bit integer variables in order to keep the size down and achieve acceptable performance. UNIBOARD features: 1 MHz 6809E processor 6809 SBC.
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