Let's give a big round of applause to the first fully operational unit of Artemisa Computer System Mk.I! 👏👏👏
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Artemisa Computer System
@ArtemisaMSX
A homebrew project to build a MSX computer using discrete logic and original integrated circuits. A side project by
Artemisa Computer System’s Tweets
Pushing on the home straight by writing the Artemisa Homebrew DIY Handbook. To facilitate the learning curve, we will have to elaborate some basic concepts.
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This is a good final candidate for the front page of the GFX9918 Assembly Manual. I love how it looks 😍
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Working on the assembly manuals. This part looks particularly beautiful 😍
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This weekend we have been present in the #RUMSX56 thanks to . Artemisa is one of the key projects of the MSX Makers initiative (msxmakers.design.blog).
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Experiments... Do you guess on what? 😉
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First prototype of Artemisa case. How does it look? 😍😍😍
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Distributing resistors in DIY kits is not easy. You have to reduce the risk of using the wrong values to the minimum. This is how Artemisa will do.
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Reminder! We have open a survey to understand the preferences of our users better. It's a good opportunity to make a great contribution to the project! forms.gle/kSRXYK83TL5hyi
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We finally have a website for Artemisa project! As simple as it gets. But it includes a link to a survey we will use to understand our users better. Please contribute to the project by responding to the survey in artemisamsx.com !
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Terracotta Army, NTSC flavored.
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Testing and playing. Robocop, one of the best licensed games from Ocean. Mind your ammo!
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Testing and playing. Today, one of the best games of Opera Soft: Livingstone Supongo.
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Assembling first unit of Artemisa Motherboard Mk.I Rev02. Wish me luck!
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Some fixes and improvements to the motherboard. Added a reset button, some jumpers to select MSX system ROM image (select user locale), a real relay for cassette REM signal (previous LED was removed)... We are really close to have a beta version.
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And finally... cartridge slots!! We just realized the connections are reversed 😂. But the design works!
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My dear friends...
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Next test scenario defined!
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This small bug in the MSX System code used by Artemisa made us stuck. We had to compare different ROMs byte by byte to find the problem: Pasmo assembler does not encode addition of negative values as expected.
Again on the road! Next test: load software from the datasette.
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HELLO WORLD!!!
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And the time we all have been waiting since so long. Artemisa boots the MSX System 😲😲😲
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After some issues caused by malfunctioning CPUs (never trust AliExpress vendors), we are on the road again. Now testing keyboard integration through the PPI. This computer rocks!!!
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PPI and RAM join to the party! Slot selection works as expected 👌
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Show this thread
We had a bug in the power-on reset circuit that prevented the VDP to work well on some boots. And this is how we fixed on the prototype PCBs. Ugly, but functional. 💪
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It's even more alive! Booting the Artemisa Diagnosis Tool ROM. This initializes the VDP in text mode and prints some menus on screen. And... it works!
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It's alive! Z80 CPU executing a simple infinite noop loop, and we observing that with the logic analyzer. Next step: setup and use the VDP to show graphics...
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Digital surgery.
BTW, tests look promising.
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Components assembled for the first CPU test. Ready to execute a infinite noop loop from ROM and see what happens.
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Developer diary! First test suite of Artemisa Motherboard passed! 👏👏👏Power, RESET signal and main clock generation work as expected.
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An army of MSX PPI's ready for release!
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Now that we are in the last 90% before Mk.I release, it's time to consider the needs of our Japanese friends 🇯🇵
