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Forum: General Discussions Topic: Migrating... 6502 to 65816 to ... ? |
| drogon |
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Posted: Thu May 30, 2024 10:52 am
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Replies: 28
Views: 786
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| ... is still a thriving community out there and a project called the PiTubeDirect - this takes a Raspberry Pi and some level shifters and interfaces ... forms (up to almost 300Mhz!) as well as the original ARM designed by Acorn, Z80, 80186, 32016, PDP11, 6809, 65816 and whatever else you care to ... |
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Forum: Programming Topic: Worlds Worst Videocard BadApple Demo. I want more FPS! |
| drogon |
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Posted: Sun Nov 19, 2023 6:00 pm
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Replies: 58
Views: 24809
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| ... standard machine using a PC as a coprocessor connected to the external Tube port. Acorn added the Tube port to their 8-bit machines specifically for coprocessors." There ... |
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Forum: Programming Topic: Worlds Worst Videocard BadApple Demo. I want more FPS! |
| NormalLuser |
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Posted: Sun Nov 19, 2023 5:28 pm
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Replies: 58
Views: 24809
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| ... standard machine using a PC as a coprocessor connected to the external Tube port. Acorn added the Tube port to their 8-bit machines specifically for coprocessors." There ... |
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Forum: Hardware Topic: Ideas for "Romless" 6502 using PIC16? |
| drogon |
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Posted: Fri Oct 27, 2023 11:02 am
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Replies: 21
Views: 45965
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| ... the same chip... Other things in a similar light to this include the PiTubeDirect project - this connects a Raspberry Pi directly to the bus on ... BBC Micro at 2Mhz. a 1GHz Pi can emulate the FIFOs used in the original Acorn Tube interface but AIUI the code is tight and almost on the limits. ... |
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Forum: General Discussions Topic: VGA circuit design ramblings |
| gfoot |
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Posted: Fri Sep 15, 2023 10:00 pm
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Replies: 15
Views: 9584
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| ... for this purpose. It also reminds me a bit in that sense of Acorn's Tube interface, where a host computer does all the grunt work of complex graphics operations ... |
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Forum: Hardware Topic: Microcontroller based Math Co-Processor |
| Proxy |
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Posted: Sun Aug 13, 2023 6:05 pm
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Replies: 13
Views: 7612
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| ... was a memory mapped (in the peripheral sense) FIFO - similar to the Acorn/BBC Micro "Tube" interface but it would complicate hardware somewhat. well a FIFO would only need ... |
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Forum: Hardware Topic: Microcontroller based Math Co-Processor |
| drogon |
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Posted: Sun Aug 13, 2023 3:35 pm
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Replies: 13
Views: 7612
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| ... was a memory mapped (in the peripheral sense) FIFO - similar to the Acorn/BBC Micro "Tube" interface but it would complicate hardware somewhat. -Gordon |
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Forum: General Discussions Topic: OS and peripherals for 6502 |
| drogon |
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Posted: Thu Jul 06, 2023 10:56 am
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Replies: 18
Views: 8683
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| ... CPC, to do full-screen graphics to a DVI (HDMI) display, with an Acorn-style byte stream.) I'm fairly sure JGH's tube-over-serial project will have a Basic implementation already. This isn't going to be Lego ... |
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Forum: General Discussions Topic: OS and peripherals for 6502 |
| BigEd |
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Posted: Thu Jul 06, 2023 10:42 am
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Replies: 18
Views: 8683
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| ... CPC, to do full-screen graphics to a DVI (HDMI) display, with an Acorn-style byte stream.) I'm fairly sure JGH's tube-over-serial project will have a Basic implementation already. This isn't going to be Lego ... |
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Forum: General Discussions Topic: OS and peripherals for 6502 |
| BigEd |
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Posted: Thu Jul 06, 2023 6:43 am
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Replies: 18
Views: 8683
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| ... host computer side. This has been done at least twice in the world of Acorn computers. See for example gfoot's ROMless Serial Filing System (over ... based upon J.G. Harston's HostFS software which implements the Serial Tube protocol to deliver access to the PC's Hard Disc Drive. For Windows, ... |
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Forum: Newbies Topic: Dual 6502 in Logisim Evolution? |
| BigEd |
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Posted: Sun May 21, 2023 7:00 am
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Replies: 4
Views: 7447
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| ... kind of communication channel: could be an 8 bit port, or two VIAs, or Acorn's Tube chip, or a number of other possibilities, including dual-port RAM. In both cases, designing ... |
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Forum: Hardware Topic: 24bit parallel colour data to HDMI |
| drogon |
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Posted: Fri Apr 14, 2023 7:02 pm
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Replies: 39
Views: 38576
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| ... sorry). The idea of using a FIFO to talk between 2 x 6502's is not new. Acorn did it back in the early 80's with the BBC Micro. It had a "Tube" interface which was essentially a full-speed bus interface designed to go into a ... |
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Forum: Programming Topic: CP/M for the 6502? |
| drogon |
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Posted: Thu Aug 18, 2022 4:55 pm
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Replies: 9
Views: 1030
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| Re Acorn's MOS: ooh, that's really cool. I love MOS, mostly, and think it's a very elegant system ... is handled in the board "host" MCU - I sort of think of my system as the Tube-side of a BC Micro with the host side being the MCU (ATmega) I think I could squeeze ... |
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Forum: Hardware Topic: Methods to Access Video RAM |
| BigEd |
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Posted: Wed Jan 05, 2022 5:02 pm
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Replies: 46
Views: 2841
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| ... what to do, and it does it. Never does the CPU read the video memory. Acorn's architecture for the BBC Micro family allows for a second processor ... processor can be as simple as a serial line, or a pair of VIAs, or a Tube chip which contains 8 FIFOs. (Revaldinho has also built a two-FIFO board ... |
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Forum: Hardware Topic: Making the 6502 address memory to the infinite and beyond |
| drogon |
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Posted: Wed May 05, 2021 12:13 pm
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Replies: 31
Views: 2054
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| ... to the real CPU which was attatched by a high speed device (The Tube) - so the first Tube CPU was another 6502 running at 3Mhz which gave ... 60KB of RAM to use. Other CPUs followed - eventually culminating in the Acorn RISC Machine (ARM), then Acorn migrated to an ARM based computer (Archimedes, ... |
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