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DMA:Дњ65 DMAgic compatible DMA controller.CPU: 48MHz GS4510 single-core, in-order, no-branch-prediction, no-cache, single-scalar, no-fpu, no-smd, no-HCF, non-pipelined, enhanced 4502 8-bit processor, with 32-bit ZP indirect and 32-bit far-JSR/JMP/RTS operations, 28-bit address space, fast hypervisor traps, virtual memory, IO virtualisation (coming soon).It features HDMI and other modern improvements. Like the original C65, it also has a Commodore 64 mode with a level of compatibility similar to that of the Commodore 128 running in C64 mode.

The Mega65 has an 8-bit CPU with additional 32-bit instructions implemented in FPGA. This video shows GEOS running in hi-res (at about 1 min 10 sec):

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V., a not-for-profit institution 'dedicated to the preservation of our digital heritage.'ДЄs well as the original C65 design, the Mega65 provides additional hardware and software enhancements, including BASIC 10 and the MAC-like graphical user interface, GEOS. Currently (Dec 2019) it is in development by associates of the Museum of Electronic Games and Art E. The Mega65 is a 100% open-source implementation of the official (but never-released) Commodore 65 computer. Open source implementation of an enhanced Commodore 65. and the Museum of Electronic Games & Art In future posts will continue with more complex samples.This article is very short and not very detailed. The app will load and execute and you will see the results: Navigate to the colortest folder and select the colortest.prg file we created. So, start the emulator ( ењ†4 or ењ†4sc) and at the File menu entry select the Smart Attach Disk / Tape option. This makefile creates a file colortest.prg which is prepared to run on a C64. Rm -f colortest.prg colortest.o colortest.sД¬heck that we used the TARGET variable to define the target platform for the compiled app. The memory address $d020 is used for setting the border color and theВ address $d021 is used for the background color so, we will set the border color to 0 or BLACK and the background color to 2 or RED.

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See that the makefile file has no extension.ДЇor the first file colortest.c the code will be: #include Inside this folder we need to create two files: colortest.c and makefile. So, create a folder, lets name it colortest. We will create a very simple app to test if everything is fine. We installed a bunch of stuff and configured the environment so, this is the moment to see if we can make it work. This last will contain information related to the target platform you will compile to (C64, Apple, Atari, etc). The other variables inform to the compiler where will found the include, the libraries and the configuration files.

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If you installed on a different place, update the CC65_HOME variable. I asume that you installed the CC65 suit at a folder named inside your active user home folder. You will need to set at least the next variables: There you will execute the make command to proceed to compile the suite.ДЄfter a while the suite will be compiled and ready to proceed. Yes, as many times on your Mac, you will need to compile the CC65 suite previous to use it so, the next step is to downloaded it from the GitHub repository.ДЄfter that, open a terminal and move inside the uncompressed CC65 folder. This will allow you to proceed to execute the make utility very used for C compiling (and other languages too).

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To properly make it works, you need the base development tools you can downloaded for free if you already do not have them installed the command line tools from the Apple Development site. the Nintendo Entertainment System (NES) console.ДЄs you can see, a lot of 8 bits devices are supported by this cross compiler.the NEC PC-Engine (aka TurboGrafx-16) console.You can check the complete list at their site but for fast reference here is the list: This cross compiler supports a wide variety of devices based on 6502 microprocessors family. I decided to check were tools are using now for development and I found the cross compiler project CC65.В and their new hosting for the project at GitHub.

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You can download a Mac pre compiled version of VICE at Sourceforge. This was already tested in conjunction with the CC65 so, I followed the lead. I have no C64 actually but I already knew the VICE emulator. So, how to, from my mac, create code using C and Assembler and running on a C64? I was a fan of the Commodore line back in the 8 bits days.