pk_do_not_be_afraid
hbc-56
| pk_do_not_be_afraid | hbc-56 | |
|---|---|---|
| 2 | 38 | |
| 75 | 173 | |
| - | - | |
| 0.0 | 8.9 | |
| about 2 years ago | 4 months ago | |
| Assembly | Assembly | |
| - | MIT License |
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pk_do_not_be_afraid
hbc-56
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Alternative designs for a keyboard interface?
I use a PIC16F microcontroller. Schematics and PIC code in my HBC-56 repo. https://github.com/visrealm/hbc-56
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After Wozmon I want to create a game - 6502
If you're keen to add a VDP as u/production-dave suggested, I have schematics and a bunch of code in my HBC-56 GitHub repo
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using an atmega micro-controller for managing multiple interrupts?
Schematics are here https://github.com/visrealm/hbc-56/tree/master/schematics/6502
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TSM9918A | Questions asked by a friend without Reddit
The schematics for my TMS9918A display card are in my github repo. It uses a single SRAM instead of the original DRAMs. The circuitry between the TMS9918A and the TV is just a simple transistor follower circuit (shown in the schematic): https://github.com/visrealm/hbc-56/tree/master/schematics/tms9918
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Small PS2 adapter
So this is really just cobbled together from this project by u/visrealm https://github.com/visrealm/hbc-56
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Is my new second hand ps/2 keyboard broken?
I've actually just ordered the perix perrino 409 that sends the AA after self test. The HP keyboard definitely doesn't seem to be working. My plan is to interface it with a PIC microcontroller by copying the setup here: https://github.com/visrealm/hbc-56. from u/visrealm
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6522 Shift register?
It looks like a shift register can be used in connecting a NES controller but likely isn't the full story. Check out u/visrealm's HBC build. He uses separate shift register chip to connect to a NES but maybe the 6522 can be used in a similar way.
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After watching Matt Heffernan's Mandelbrot Battle Royale, I thought I'd give it a go on my HBC-56 (65C02 @ 3.6864MHz + TMS9918A). Four modes: 32x24, 64x48, 64x192 and 256x192 (sort of). . I still need to work on improving color bleeding in the final Graphics II mode. A bit of fun.
It's Assembly. https://github.com/visrealm/hbc-56/tree/master/code/6502/mandlebrot
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4 cards down, 1 to go. No real issues since the R/W switch on the CPU card.
I have most schematics, software, emulator, etc on github. https://github.com/visrealm/hbc-56
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Five new cards arrived today. Hopefully I didn't make too many mistakes...
These are for a 6502 build. https://github.com/visrealm/hbc-56
What are some alternatives?
minifb - MiniFB is a small cross platform library to create a frame buffer that you can draw pixels in
TMS9918A - TMS9918A video card for RC2014
HelloSilicon - An introduction to ARM64 assembly on Apple Silicon Macs
RomWBW - System Software for Z80/Z180/Z280 Computers
floppybird - Floppy Bird (OS)
spectrum-desolate - 🕹️ Ported Desolate game from TI-83 Plus to ZX Spectrum
KnightOS - OS for z80 calculators
6502 - Code for the 6502 microprocessor, mostly for the Replica 1 computer.
64bit-os-tutorial - This OS Tutorial expands on the fundamental concepts covered in cfenollosa/os-tutorial and covers entering long mode on the x86_64 architecture. It also uses clang rather than relying on an external crosscompiler. I plan on keeping it up to date, so feel free to submit an issue!
vrEmuLcd - Character LCD emulator library (C99 engine, web front-end).
x86-bare-metal-examples - Dozens of minimal operating systems to learn x86 system programming. Tested on Ubuntu 17.10 host in QEMU 2.10 and real hardware. Userland cheat at: https://github.com/cirosantilli/linux-kernel-module-cheat#userland-assembly ARM baremetal setup at: https://github.com/cirosantilli/linux-kernel-module-cheat#baremetal-setup 学习x86系统编程的数十个最小操作系统。 已在QEMU 2.10中的Ubuntu 17.10主机和真实硬件上进行了测试。 Userland作弊网址：https：//github.com/cirosantilli/linux-kernel-module-cheat#userland-assembly ARM裸机安装程序位于：https：//github.com/cirosantilli/linux-kernel-module-cheat#baremetal- 设置 21世纪新政宣言（2020年4月5曰笫四次修改稿)（2020年6月19曰第七次修改，以下“【】”内文字为非正文内容的说明）20世纪苏联的消亡和东欧的大变革，使这21世纪初的现中国大陆成为世界关注的最主要焦点和影响新世纪文明发展的关键。特别是大陆这些年对外意识形态渗透，震撼整个世界。美中贸易战实际已打响人类意识形态领域最后的冷战，海峡两岸关系恶化，香港不断的百万人游行，南海邻国关系紧张。大陆经济急速下滑衰退，内外矛盾激化高端深感前所未有的生存危机。包括中共上下在内的几乎所有人都很清楚，大陆已到非政治体制改革而不可的时候了，大变革将是民意世潮下的必然结局。中国大陆内外即全球正合力促成这人口第一大国的大变革，这也为中国开创新政提供了一次最佳机会。综合各政体和各国现实，绝大多数国家改革选择了西方民主政体，但其固有的越来越明显的缺陷已成为有人攻击、拒绝或怀疑的理由。这也是近年来西方国家出现了宽容那必将灭亡的独裁专制政府的左翼当选，是不少选民失去信心的表现和原因。不仅如此，西方现民主制的
6502 - DB6502: 65C02 based computer inspired by BE6502