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All these modes support smooth scrolling.įor basic sound, the VERA chip itself has a programmable 16-channel stereo sound generator based loosely on the SID it is also capable of PCM playback. The Vera chip supports per-tile h-flip, v-flip, 4-bit palette offset, 10 bit tile index.

Its color palette is 256 colors, using a total range of 4096 colors. It has multiple output formats, at a fixed resolution of It supports two layers with various tile and bitmap modes, and up to 128 sprites. VERA has 128 KB of its own RAM, and directly outputs a VGA signal.

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The graphics capabilities of the X16 are provided by the single FGPA, code named "VERA". It also has two exposed SNES game controller connectors, with two internal pin headers that can support two more connectors.

Like the C64 and the VIC-20, the system contains an IEC compatible disk drive port. Device #1 is an SD card, instead of the Commodore Datasette. The X16 has four expansion slots with access to the CPU databus. Physically the system is a Micro ATX motherboard with all-DIP socketed chips. Bank 0 is a scratch space for the operating system. The X16 also ships with 512K "high" static RAM, which is split into banks of 8K. The 512K ROM is split into 32 banks of 16K each Bank 0 holds the Commodore KERNAL and BASIC. The memory model is inspired by the VIC-20 with 40k of "low RAM". It provide a real-time clock/calendar, two alarms and 64 bytes of RAM.

Battery-backed Microchip MCP7940N real-time-clock chip.

Operating System: Commodore KERNAL and BASIC.

Inputs: SD four expansion slots with access to the CPU databus IEC port SNES ports I2C bus.

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Outputs: Two SNES controller ports, plus two additional SNES port headers on the board for expansion.

Media: An on-board SD card with native FAT32 support is used for primary storage.

ROM: Banked in 16K groups the default bank zero contains an upgraded Commodore KERNAL, with DOS functions and a 16 bit ABI, and an upgraded BASIC 2.0 with significant math speed improvements and additional functionality.

An additional 512K SRAM (expandable to 2MB) is accessible in 8K banks.

RAM: 40K "low" or "BASIC" RAM, with 1K of this used by the system for I/O.

In addition, the VERA module has a 16-channel stereo Programmable Sound Generator with multiple waveforms (Pulse, Sawtooth, Triangle, Noise), and high quality PCM audio playback from an 4 KB FIFO buffer featuring up to 48kHz 16-bit stereo sound.

Video: The VERA module generates VGA (and other formats) at a fixed resolution of two layers, both supporting 1/2/4/8 bpp tile and bitmap modes 128 sprites 128K video RAM a palette with 256 colors selected from a total range of 4096 colors.

CPU: Western Digital 65C02S, a static descendant of the 6502.

The X16 is expected to ship with an augmented Commodore KERNAL, BASIC (with a DOS wedge, among other things), a machine language monitor, an assembly language editor, and more. While the last Commodore 8-bit computers had BASIC 7.0, the X16 defaults to version 2.0, but grew the feature sets of both BASIC and the KERNAL. He discussed requirements for sound and proposed potential sound chips. By the end of the second video, he had settled on a 6502-derived CPU, the Commodore KERNAL, and an architecture based loosely on the VIC-20. In 2019, the popular YouTube program The 8-Bit Guy posted two videos titled "Building My Dream Computer", where he discussed hardware considerations in building a modern 8-bit computer.

8 Legality of the modified KERNAL and BASIC.

It has an informal relationship with the MEGA65 and the C256 Foenix.

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It is intended to be inexpensive enough to promote a critical mass of users, to create its own software ecosystem, yet be simple enough that a single person can understand the entire system. It has a real 8-bit CPU rather than using emulation or an FPGA recreation of a processor. The X16 is made entirely with off-the-shelf modern parts, ensuring availability without reliability issues. It is intended not only as an educational tool, but also to solve retro-computing problems of today: namely, ever-increasing costs, auction site price gouging/sniping, and unreliability of 30-year old hardware. I wanted a computer that was similar to the Commodore 64, but made from all off-the-shelf components. It is the brainchild of David "the 8 Bit Guy" Murray, who wanted an accessible and affordable 8-bit hobbyist platform. It is intended to be a hobby computer built from modern off-the-shelf parts, with KERNAL compatibility with the Commodore family of computers. The Commander X16 (colloquially known as the X-16) is a modern 8-bit computer currently in active development. Please help to improve it.ĥ12K ROM + 40K program RAM + 512K banked RAM (expandable to 2MB) This article is very short and not very detailed.