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41 Results for "MC68000"

  • わたなべ

  • I am Japanese. I live in Japan.大腸の無いフリーなプログラマでございます。MC68000 YEAH! ベラボーマン/源平討魔伝をDSに移植してみた:https://t.co/0g7Kx8wwIP...
  • Upcoming refactoring

  • Some OpenSource/DIY software projects, containing legacy C code have been rewritten into C++. There is no any reasons to stay on C if C++ available on target platform. It has everything that C has and many "free" features, which cost 0 extra bytes and...
  • Loading/Running Tiny BASIC

  • The Motorola MC68000 Educational Computer Board (MEX68KECB) has a Tiny BASIC that is already assembled. Since the card is compatible with my FPGA design it loads nicely. Type LOAD on VDU portWaits on S-records from the ACIA portRunning PuTTY...
  • Assemble

  • I have ported the Motorola assembler and monitor. The manual is in the files, it is the software from the Motorola MC68000 Educational Computer Board (MEX68KECB). There is a site with more info here: http://www.easy68k.com/paulrsm/mecb/mecb.htmIt...
  • Retro 68000 CPU in an FPGA

  • I've wanted to build a 68000 system for a long time. I built some commercial systems back in the 1980's based on the 68000 and really like the CPU.  There's a few 68000 builds on YouTube. The best documented 68000 build is Jeff Tranter's build...
  • Test rig

  • The sketch below describes key hardware components of this proof of concept:Propeller proto-boardThis board is out of production, but any proto-board with Propeller can be used. It is convenient that the number of signals that need to be driven is small: 8...
  • 1617 ZPAL analysis

  • U8 ("ZPAL") - the glue logic for the onboard Z80 microcomputer The Z80’s memory map is as follows 0000H-5FFF H:ROM 6000H-7FFF Common RAM bank H: 8000H-FFFF Switching RAM bank H: So that the Z80 may access all of the possible 64 kbytes of RAM whilst still...
  • LM3671 step-down DC-DC converter: sigh.

  • The following is a rant. If you're not in the mood for reading a rant, please don't bother reading on.So: the LM3671 dc-dc converter. According to its data sheet, "...only three tiny surface-mount external components required (one inductor, two ceramic...
  • 10/100Mbps Ethernet card

  • It has been quite a while since my last update, and the project has moved forward a long way! I’ve made a lot of progress with the operating system software (I’ll be writing a log about this soon) and the hardware has advanced a bit too.I designed a...
  • Ping!

  • I spent a little while reworking the network stack in the m68k OS code. The idea is to end up with a reasonably generic stack: ideally, like Linux and friends, the OS code shouldn't really care about what kind of network adaptors are plugged in, and...
  • 68000 minimal homebrew computer

  • (work in progress...) Introduction Is the design of a 68000 single board computer (SBC) difficult? If you see the huge chip (dip 64) you should think so, but it is relatively simple. Compared to other CPU's like the Intel 8086, the address and data-lines...
  • New Parts!

  • After the HAD article [Brandon Dunson] wrote about Tanner Electronics, and the subsequent realization that I'm only 30 miles away, I had to go check it out. Two hours and $35 later, this project has new life.I picked up a 1.8432 MHz crystal and an oscillator...