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charset="iso-8859-1" X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 95cd311f-b2b6-4227-3afb-08d8cfb94b29 X-MS-TrafficTypeDiagnostic: SL2PR02MB4010: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:9508; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:172.86.181.34; CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:exchange.superglobalmegacorp.local; PTR:joe28.superglobalmegacorp.com; CAT:NONE; SFS:(136003)(396003)(376002)(346002)(39830400003)(83730400007)(36840700001)(46966006)(8936002)(47076005)(26005)(186003)(478600001)(83380400001)(8676002)(82310400003)(33716001)(36906005)(9686003)(37786003)(426003)(53546011)(70206006)(5660300002)(86362001)(33656002)(70586007)(36860700001)(316002)(2906002)(336012)(42186006)(356005)(110136005)(966005); DIR:OUT; SFP:1101; X-OriginatorOrg: superglobalmegacorp.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Feb 2021 00:50:00.1961 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 95cd311f-b2b6-4227-3afb-08d8cfb94b29 X-MS-Exchange-CrossTenant-Id: 870ed452-0577-4b7b-90ed-9cac080031b9 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=870ed452-0577-4b7b-90ed-9cac080031b9; Ip=[172.86.181.34]; Helo=[exchange.superglobalmegacorp.local] X-MS-Exchange-CrossTenant-AuthSource: HK2APC01FT037.eop-APC01.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SL2PR02MB4010 Subject: Re: [TUHS] 68k prototypes & microcode X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" You might find this interesting https://twitter.com/i/status/1320767372853190659 It's a pi (arm) running Musashi a 68000 core, but using voltage buffers it's plugged into the 68000 socket of an Amiga! You can find more info on their github: https://github.com/captain-amygdala/pistorm Maybe we are at the point where numerous cheap CPU's can eliminate FPGA's? -----Original Message----- From: Michael Parson [SMTP:mparson@bl.org] Sent: Friday, February 05, 2021 10:43 PM To: The Eunuchs Hysterical Society Subject: Re: [TUHS] 68k prototypes & microcode On 2021-02-04 16:47, Henry Bent wrote: > On Thu, Feb 4, 2021, 17:40 Adam Thornton wrote: > >> I'm probably Stockholm Syndrommed about 6502. It's what I grew up on, >> and >> I still like it a great deal. Admittedly register-starved (well, >> unless >> you consider the zero page a whole page of registers), but...simple, >> easy >> to fit in your head, kinda wonderful. >> >> I'd love a 64-bit 6502-alike (but I'd probably give it more than three >> registers). I mean given how little silicon (or how few FPGA gates) a >> reasonable version of that would take, might as well include 65C02 and >> 65816 cores in there too with some sort of mode-switching instruction. >> Wouldn't a 6502ish with 64-bit wordsize and a 64-bit address bus be >> fun? >> Throw in an onboard MMU and FPU too, I suppose, and then you could >> have a >> real system on it. >> >> > Sounds like a perfect project for an FPGA. If there's already a 6502 > implementation out there, converting to 64 bit should be fairly easy. There are FPGA implementations of the 6502 out there. If you've not seen it, check out the MiSTer[0] project, FPGA implementations of a LOT of computers, going back as far as the EDSAC, PDP-1, a LOT of 8, 16, and 32 bit systems from the 70s and 80s along with gaming consoles from the 70s and 80s. Keeping this semi-TUHS related, one guy[1] has even implemented a Sparc 32m[2] (I think maybe an SS10), which boots SunOS 4, 5, Linux, NetBSD, and even the Sparc version of NeXTSTEP, but it's not part of the "official" MiSTer bits (yet?). -- Michael Parson Pflugerville, TX KF5LGQ [0] https://github.com/MiSTer-devel/Main_MiSTer/wiki [1] https://temlib.org/site/ [2] https://temlib.org/pub/mister/SS/