--- title: Homebrew 68K Machine Has A PCI Bus | daily.dev description: A homebrew computer built by maniek86 around a Motorola 68000 CPU running at 10 MHz features a genuine PCI bus, implemented using a Xilinx Spartan II FPGA... canonical: https://daily.dev/posts/homebrew-68k-machine-has-a-pci-bus-si8sau451 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Homebrew 68K Machine Has A PCI Bus | daily.dev og:description: A homebrew computer built by maniek86 around a Motorola 68000 CPU running at 10 MHz features a genuine PCI bus, implemented using a Xilinx Spartan II FPGA... og:url: https://daily.dev/posts/homebrew-68k-machine-has-a-pci-bus-si8sau451 og:image: https://api.daily.dev/og/posts/si8sau451.png og:image:alt: Homebrew 68K Machine Has A PCI Bus og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Homebrew 68K Machine Has A PCI Bus **[Hackaday](https://daily.dev/sources/hackaday)** · 2 min read · 1 upvotes · 0 comments ## Summary A homebrew computer built by maniek86 around a Motorola 68000 CPU running at 10 MHz features a genuine PCI bus, implemented using a Xilinx Spartan II FPGA acting as a PCI bridge and an XC95144XL CPLD for glue logic. The machine has 1 MB of SRAM, 4 KB of ROM, and an MC68681P chip serving as UART, timer, and I/O controller. It offers two 32-bit, 5-volt PCI slots with interrupt support (but no bus mastering), and has been tested with a PCI serial expansion card and a Cirrus VGA adapter. The build is assembled on protoboard rather than a custom PCB, and its creator previously built an FPGA-based 486-compatible single-board computer. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How can you add a PCI bus to a homebrew Motorola 68000 computer? A Xilinx Spartan II FPGA (XC2S100) can act as a PCI bridge, providing two 32-bit 5-volt PCI slots with interrupt support but no bus mastering. The system pairs a 10 MHz 68000 CPU, 1 MB SRAM, 4 KB ROM, and an MC68681P UART/timer/IO controller, with an XC95144XL CPLD supplying glue logic between components. _Anyone tinkering with retro CPU builds can find more FPGA bridging writeups curated on daily.dev._ ## Similar posts on daily.dev - [M8SBC-486 \(Homebrew 486 computer\)](https://daily.dev/posts/m8sbc-486-homebrew-486-computer--zpe54i0wi) · Hacker News · 2 upvotes · 0 comments - [2026 Retrocomputing Challenge: A Homebrew Computer In Only Three ICs](https://daily.dev/posts/2026-retrocomputing-challenge-a-homebrew-computer-in-only-three-ics-j0juvrxgu) · Hackaday · 0 upvotes · 0 comments - [M8SBC-86 Is An FPGA-Based “Kinda PC Compatible” 486](https://daily.dev/posts/m8sbc-86-is-an-fpga-based-kinda-pc-compatible-486-kajq3erjx) · Hackaday · 2 upvotes · 0 comments - [Bit-Hacks Pixel Dungeon](https://daily.dev/posts/bit-hacks-pixel-dungeon-rwpb3ueug) · Two Stop Bits · 0 upvotes · 0 comments - [Someone made use of Linux's 68000 CPU compatibility by running it off an Atari Jaguar](https://daily.dev/posts/someone-made-use-of-linux-s-68000-cpu-compatibility-by-running-it-off-an-atari-jaguar-bs2kkrt12) · XDA Developers · 0 upvotes · 0 comments --- Tags: [#fpga](https://daily.dev/tags/fpga), [#retrocomputing](https://daily.dev/tags/retrocomputing) [View this post on daily.dev](https://daily.dev/posts/homebrew-68k-machine-has-a-pci-bus-si8sau451) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Homebrew 68K Machine Has A PCI Bus","url":"https://daily.dev/posts/homebrew-68k-machine-has-a-pci-bus-si8sau451","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/homebrew-68k-machine-has-a-pci-bus-si8sau451"},"datePublished":"2026-08-20T20:12:44.904Z","dateModified":"2026-09-14T08:57:42.758Z","description":"A homebrew computer built by maniek86 around a Motorola 68000 CPU running at 10 MHz features a genuine PCI bus, implemented using a Xilinx Spartan II FPGA...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/c7e47181bc64ecea4122378ba7a87cbc?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/c7e47181bc64ecea4122378ba7a87cbc?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Hackaday","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Hackaday","logo":"https://media.daily.dev/image/upload/s--JhDfhy70--/f_auto,q_auto/v1767541814/logos/hackaday","url":"https://daily.dev/sources/hackaday"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/homebrew-68k-machine-has-a-pci-bus-si8sau451","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"fpga,retrocomputing","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Hackaday","item":"https://daily.dev/sources/hackaday"},{"@type":"ListItem","position":3,"name":"Homebrew 68K Machine Has A PCI Bus"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/homebrew-68k-machine-has-a-pci-bus-si8sau451#faq","mainEntity":[{"@type":"Question","name":"How can you add a PCI bus to a homebrew Motorola 68000 computer?","acceptedAnswer":{"@type":"Answer","text":"A Xilinx Spartan II FPGA (XC2S100) can act as a PCI bridge, providing two 32-bit 5-volt PCI slots with interrupt support but no bus mastering. The system pairs a 10 MHz 68000 CPU, 1 MB SRAM, 4 KB ROM, and an MC68681P UART/timer/IO controller, with an XC95144XL CPLD supplying glue logic between components. Anyone tinkering with retro CPU builds can find more FPGA bridging writeups curated on daily.dev."}}]} ```