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#100daysrtl

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Tom Gambill<p>Switching topics to I/O and game controller support, this week we look briefly at the PIA for Project Ember</p><p>The Ember PIA — Initial Design Part 1: Peripheral Interface Adapter<br><a href="https://skicat.medium.com/21f7f4abb2e8" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">skicat.medium.com/21f7f4abb2e8</span><span class="invisible"></span></a></p><p><a href="https://techhub.social/tags/cpudesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cpudesign</span></a> <a href="https://techhub.social/tags/retrodev" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrodev</span></a> <a href="https://techhub.social/tags/8bit" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>8bit</span></a> <a href="https://techhub.social/tags/16bit" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>16bit</span></a> <a href="https://techhub.social/tags/100DaysRTL" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>100DaysRTL</span></a> <a href="https://techhub.social/tags/DigitalDesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DigitalDesign</span></a> <a href="https://techhub.social/tags/ElectronicsEngineering" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElectronicsEngineering</span></a> <a href="https://techhub.social/tags/TechInnovation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>TechInnovation</span></a> <a href="https://techhub.social/tags/hardwaredesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hardwaredesign</span></a> <a href="https://techhub.social/tags/PCBDesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PCBDesign</span></a> <a href="https://techhub.social/tags/RetroDev" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RetroDev</span></a> <a href="https://techhub.social/tags/KiCad" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>KiCad</span></a> <a href="https://techhub.social/tags/DIYProjects" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DIYProjects</span></a> <a href="https://techhub.social/tags/retrocomputern" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrocomputern</span></a> <a href="https://techhub.social/tags/Verilog" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Verilog</span></a> <a href="https://techhub.social/tags/ALU" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ALU</span></a> <a href="https://techhub.social/tags/8BitALU" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>8BitALU</span></a> <a href="https://techhub.social/tags/VLSI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>VLSI</span></a> <a href="https://techhub.social/tags/RTLDesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RTLDesign</span></a> <a href="https://techhub.social/tags/FPGA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FPGA</span></a> <a href="https://techhub.social/tags/ASIC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ASIC</span></a> <a href="https://techhub.social/tags/ProcessorDesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ProcessorDesign</span></a></p>
Tom Gambill<p>Baby steps in getting my Apple I reproduction PCB up and running. 6502 CPU booting with just RAM and ROM attached. It grabs the reset address from ROM and starts executing code...until it tries to do something with IO, which is not attached yet...</p><p>I'm monitoring the bus with an Arduino MEGA attached to my MacBook Pro.</p><p><a href="https://techhub.social/tags/cpudesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cpudesign</span></a> <a href="https://techhub.social/tags/retrodev" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrodev</span></a> <a href="https://techhub.social/tags/8bit" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>8bit</span></a> <a href="https://techhub.social/tags/16bit" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>16bit</span></a> <a href="https://techhub.social/tags/100DaysRTL" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>100DaysRTL</span></a> <a href="https://techhub.social/tags/DigitalDesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DigitalDesign</span></a> <a href="https://techhub.social/tags/ElectronicsEngineering" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElectronicsEngineering</span></a> <a href="https://techhub.social/tags/TechInnovation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>TechInnovation</span></a> <a href="https://techhub.social/tags/hardwaredesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hardwaredesign</span></a> <a href="https://techhub.social/tags/PCBDesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PCBDesign</span></a> <a href="https://techhub.social/tags/RetroDev" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RetroDev</span></a> <a href="https://techhub.social/tags/KiCad" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>KiCad</span></a> <a href="https://techhub.social/tags/DIYProjects" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DIYProjects</span></a> <a href="https://techhub.social/tags/retrocomputer" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrocomputer</span></a></p>
Tom Gambill<p>Boards look great! Starting the slow bring up with just the CPU, RAM, and ROM...and, of course, clock circuit and logic analyzer...</p><p><a href="https://techhub.social/tags/cpudesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cpudesign</span></a> <a href="https://techhub.social/tags/retrodev" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrodev</span></a> <a href="https://techhub.social/tags/8bit" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>8bit</span></a> <a href="https://techhub.social/tags/16bit" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>16bit</span></a> <a href="https://techhub.social/tags/100DaysRTL" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>100DaysRTL</span></a> <a href="https://techhub.social/tags/Verilog" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Verilog</span></a> <a href="https://techhub.social/tags/ALU" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ALU</span></a> <a href="https://techhub.social/tags/8BitALU" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>8BitALU</span></a> <a href="https://techhub.social/tags/VLSI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>VLSI</span></a> <a href="https://techhub.social/tags/RTLDesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RTLDesign</span></a> <a href="https://techhub.social/tags/FPGA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FPGA</span></a> <a href="https://techhub.social/tags/ASIC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ASIC</span></a> <a href="https://techhub.social/tags/DigitalDesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DigitalDesign</span></a> <a href="https://techhub.social/tags/ElectronicsEngineering" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElectronicsEngineering</span></a> <a href="https://techhub.social/tags/TechInnovation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>TechInnovation</span></a> <a href="https://techhub.social/tags/ProcessorDesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ProcessorDesign</span></a><br><a href="https://techhub.social/tags/hardwaredesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hardwaredesign</span></a> <a href="https://techhub.social/tags/PCBDesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PCBDesign</span></a> <a href="https://techhub.social/tags/RetroDev" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RetroDev</span></a> <a href="https://techhub.social/tags/KiCad" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>KiCad</span></a> <a href="https://techhub.social/tags/DIYProjects" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DIYProjects</span></a> <a href="https://techhub.social/tags/retrocomputer" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrocomputer</span></a></p>
Tom Gambill<p>The Ember Console — System Architecture Design: Basic Requirements<br><a href="https://medium.com/the-ember-project/the-ember-console-system-architecture-design-basic-requirements-97de358a952a" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">medium.com/the-ember-project/t</span><span class="invisible">he-ember-console-system-architecture-design-basic-requirements-97de358a952a</span></a> <br>Moving on to the system design, this is an overview of the remaining parts we need to design in order to create a working system capable of playing 80s and 90s-era homebrew video games.</p><p><a href="https://techhub.social/tags/cpudesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cpudesign</span></a> <a href="https://techhub.social/tags/retrodev" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrodev</span></a> <a href="https://techhub.social/tags/8bit" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>8bit</span></a> <a href="https://techhub.social/tags/16bit" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>16bit</span></a> <a href="https://techhub.social/tags/100DaysRTL" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>100DaysRTL</span></a> <a href="https://techhub.social/tags/Verilog" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Verilog</span></a> <a href="https://techhub.social/tags/ALU" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ALU</span></a> <a href="https://techhub.social/tags/8BitALU" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>8BitALU</span></a> <a href="https://techhub.social/tags/VLSI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>VLSI</span></a> <a href="https://techhub.social/tags/RTLDesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RTLDesign</span></a> <a href="https://techhub.social/tags/FPGA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FPGA</span></a> <a href="https://techhub.social/tags/ASIC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ASIC</span></a> <a href="https://techhub.social/tags/DigitalDesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DigitalDesign</span></a> <a href="https://techhub.social/tags/ElectronicsEngineering" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElectronicsEngineering</span></a> <a href="https://techhub.social/tags/TechInnovation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>TechInnovation</span></a> <a href="https://techhub.social/tags/ProcessorDesign" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ProcessorDesign</span></a></p>
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