home.social

#cbm — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #cbm, aggregated by home.social.

  1. A new 3D CT–fractal method quantifies coal fracability via fracture surface area. Lower stress contrast and CO₂ fracturing boost complexity by up to 50%. #openaccess at shortlink.uk/1mfxL
    #naturalgas #coalbedmethane #CBM #Fracturing #CO2

  2. Here is another project I've been working on: github.com/ytmytm/1551-RAMBOar

    It's a RAMBOard, but for 1551. As far as I know this is the first of its kind. Just like on 1541-II a small daughterboard that plugs into the ROM socket. It adds 8K of RAM ($8000-$9FFF) plus 8K of extra ROM space ($A000-$BFFF).

    There is a patched ROM which uses the extra RAM as a track cache: it reads the entire track in one disk revolution, then serves subsequent sector reads from memory. Same idea as the track caching ROMs I did for 1541 and 1571.

    The project also includes a tiny fastloader wedge (HypaRAM) that calls the code embedded in the patched ROM. The same fastloader is already supported by the latest version of Parobek ROM for C16/116/Plus4.

    The performance is on par with DolphinDOS - about 27x faster than a stock 1541, about 7x faster than a stock 1551.

    #commodore #commodore16 #plus4 #hardware #8bit #cbm

  3. Here is another project I've been working on: github.com/ytmytm/1551-RAMBOar

    It's a RAMBOard, but for 1551. As far as I know this is the first of its kind. Just like on 1541-II a small daughterboard that plugs into the ROM socket. It adds 8K of RAM ($8000-$9FFF) plus 8K of extra ROM space ($A000-$BFFF).

    There is a patched ROM which uses the extra RAM as a track cache: it reads the entire track in one disk revolution, then serves subsequent sector reads from memory. Same idea as the track caching ROMs I did for 1541 and 1571.

    The project also includes a tiny fastloader wedge (HypaRAM) that calls the code embedded in the patched ROM. The same fastloader is already supported by the latest version of Parobek ROM for C16/116/Plus4.

    The performance is on par with DolphinDOS - about 27x faster than a stock 1541, about 7x faster than a stock 1551.

    #commodore #commodore16 #plus4 #hardware #8bit #cbm

  4. Here is another project I've been working on: github.com/ytmytm/1551-RAMBOar

    It's a RAMBOard, but for 1551. As far as I know this is the first of its kind. Just like on 1541-II a small daughterboard that plugs into the ROM socket. It adds 8K of RAM ($8000-$9FFF) plus 8K of extra ROM space ($A000-$BFFF).

    There is a patched ROM which uses the extra RAM as a track cache: it reads the entire track in one disk revolution, then serves subsequent sector reads from memory. Same idea as the track caching ROMs I did for 1541 and 1571.

    The project also includes a tiny fastloader wedge (HypaRAM) that calls the code embedded in the patched ROM. The same fastloader is already supported by the latest version of Parobek ROM for C16/116/Plus4.

    The performance is on par with DolphinDOS - about 27x faster than a stock 1541, about 7x faster than a stock 1551.

    #commodore #commodore16 #plus4 #hardware #8bit #cbm

  5. Here is another project I've been working on: github.com/ytmytm/1551-RAMBOar

    It's a RAMBOard, but for 1551. As far as I know this is the first of its kind. Just like on 1541-II a small daughterboard that plugs into the ROM socket. It adds 8K of RAM ($8000-$9FFF) plus 8K of extra ROM space ($A000-$BFFF).

    There is a patched ROM which uses the extra RAM as a track cache: it reads the entire track in one disk revolution, then serves subsequent sector reads from memory. Same idea as the track caching ROMs I did for 1541 and 1571.

    The project also includes a tiny fastloader wedge (HypaRAM) that calls the code embedded in the patched ROM. The same fastloader is already supported by the latest version of Parobek ROM for C16/116/Plus4.

    The performance is on par with DolphinDOS - about 27x faster than a stock 1541, about 7x faster than a stock 1551.

    #commodore #commodore16 #plus4 #hardware #8bit #cbm

  6. Here is another project I've been working on: github.com/ytmytm/1551-RAMBOar

    It's a RAMBOard, but for 1551. As far as I know this is the first of its kind. Just like on 1541-II a small daughterboard that plugs into the ROM socket. It adds 8K of RAM ($8000-$9FFF) plus 8K of extra ROM space ($A000-$BFFF).

    There is a patched ROM which uses the extra RAM as a track cache: it reads the entire track in one disk revolution, then serves subsequent sector reads from memory. Same idea as the track caching ROMs I did for 1541 and 1571.

    The project also includes a tiny fastloader wedge (HypaRAM) that calls the code embedded in the patched ROM. The same fastloader is already supported by the latest version of Parobek ROM for C16/116/Plus4.

    The performance is on par with DolphinDOS - about 27x faster than a stock 1541, about 7x faster than a stock 1551.

    #commodore #commodore16 #plus4 #hardware #8bit #cbm

  7. While I'm waiting parts for my 4016, I thought I'd take a look at the 4040 disk drive. It's going to need a bit of work....

    I was going to power it up but I think I need to clean up the drives first and get the heads moving freely.

    The motherboard is, as always, clean and tidy as it sits on the underside of the lid so it never gets dirt landing on it. And it also looks like it has DOS 2.0 ROMs so that's a start.

    #commdore #commodrepet #cbm #cbm4040 #retrocomputing

  8. Aktualisierter TriMod 2.0 Adapter – “IEC”, IEEE-488 und parallele Schnittstelle für die 1541

    Nachdem ich meinen letzten TriMod-Adapter-Prototyp auf CPLD-Basis vorgestellt hatte, wurde ich gefragt, ob eine Version gebaut werden könnte, die in eine geschlossene 1541 passt. Also habe ich das Ganze ein wenig optimiert und eine kleinere Platine e…

    #1541 #2.0 #adapter #Bus #CBM #CPLD #GPIB #IEEE488 #TriMod #VC1541 #Xilinx

    dirkwouters.de/new-trimod-ii-a

  9. Kleines Update für das XoomFloppy Pro

    Aufgrund einiger Rückmeldungen habe ich das XoomFloppy Pro ein wenig angepasst. Offenbar wird der Centronics-Anschluss für den IEEE-488-Port mehr benötigt, als ich dachte. Deshalb habe ich versucht, mit minimaler Vergrößerung der Platine, diesen noch…

    #CBM #commodore #drucker #Festplatte #GPIB #IEC #IEEE488 #Kabel #opencbm #parallel #Pro #SFD1001 #SpeedDOS #VC1541 #XoomFloppy #XUM1541 #ZoomFloppy

    dirkwouters.de/xoomfloppy-pro-

  10. Kleines Update für das XoomFloppy Pro

    Aufgrund einiger Rückmeldungen habe ich das XoomFloppy Pro ein wenig angepasst. Offenbar wird der Centronics-Anschluss für den IEEE-488-Port mehr benötigt, als ich dachte. Deshalb habe ich versucht, mit minimaler Vergrößerung der Platine, diesen noch…

    #CBM #commodore #drucker #Festplatte #GPIB #IEC #IEEE488 #Kabel #opencbm #parallel #Pro #SFD1001 #SpeedDOS #VC1541 #XoomFloppy #XUM1541 #ZoomFloppy

    dirkwouters.de/xoomfloppy-pro-

  11. Nachbau der IEC64W IEEE-488 Karte für den Commodore C64

    In diesem Artikel geht es um den Nachbau einer alten IEEE-488 Schnittstellenkarte für den Commodore C64 und Commodore C128. Diese Karte war sehr nützlich, wenn man z.B. die Commodore SFD-1001 Floppy hatte, die nur einen IEEE-488 Anschluß hatte. A…

    #c64 #Cartridge #CBM #commodore #Datentechnik #diy #Expansion #GPIB #IEC64 #IEC64W #IEEE488 #JANN #Nachbau #PET #Port #REX #SX64 #WAW

    dirkwouters.de/iec64w/

  12. Nachbau der IEC64W IEEE-488 Karte für den Commodore C64

    In diesem Artikel geht es um den Nachbau einer alten IEEE-488 Schnittstellenkarte für den Commodore C64 und Commodore C128. Diese Karte war sehr nützlich, wenn man z.B. die Commodore SFD-1001 Floppy hatte, die nur einen IEEE-488 Anschluß hatte. A…

    #c64 #Cartridge #CBM #commodore #Datentechnik #diy #Expansion #GPIB #IEC64 #IEC64W #IEEE488 #JANN #Nachbau #PET #Port #REX #SX64 #WAW

    dirkwouters.de/iec64w/

  13. Der TriMod CBM Adapter jetzt auch ohne SMD

    Meine Vorliebe für SMD wird sicherlich nicht von allen geteilt. Und ich habe vor einiger Zeit versprochen, eine Version des TriMod CBM Adapters ohne SMD zu machen. Und die möchte ich euch in diesem Artikel vorstellen. Man könnte auch sagen, die Fastenzeit ist vorbei, es darf wieder ein bisschen mehr…

    #1541 #2031LP #adapter #c64 #CBM #commodore #Disk #Drive #GPIB #IEC #IEEE488 #TriMod #VC1541

    dirkwouters.de/trimod-adapter/

  14. Der TriMod CBM Adapter jetzt auch ohne SMD

    Meine Vorliebe für SMD wird sicherlich nicht von allen geteilt. Und ich habe vor einiger Zeit versprochen, eine Version des TriMod CBM Adapters ohne SMD zu machen. Und die möchte ich euch in diesem Artikel vorstellen. Man könnte auch sagen, die Fastenzeit ist vorbei, es darf wieder ein bisschen mehr…

    #1541 #2031LP #adapter #c64 #CBM #commodore #Disk #Drive #GPIB #IEC #IEEE488 #TriMod #VC1541

    dirkwouters.de/trimod-adapter/

  15. TriMod CBM Adapter – Eine Commodore-Laufwerk für zwei Welten

    IEEE-488-Diskettenlaufwerke für die CBM-Welt sind sehr selten und teuer. Warum nimmt man nicht einfach eine billige VC1541 und erweitert sie um einen IEEE-488-Anschluss, ohne dabei den seriellen IEC-Anschluss zu verlieren. Mit dem TriMod CBM-Adapter kan…

    #1541 #2031LP #adapter #Bus #C128 #c64 #CBM #commodore #Disk #Drive #GPIB #IEC #IEEE488 #Laufwerk #PET #smd #TriMod

    dirkwouters.de/trimod-adapter-

  16. TriMod CBM Adapter – Eine Commodore-Laufwerk für zwei Welten

    IEEE-488-Diskettenlaufwerke für die CBM-Welt sind sehr selten und teuer. Warum nimmt man nicht einfach eine billige VC1541 und erweitert sie um einen IEEE-488-Anschluss, ohne dabei den seriellen IEC-Anschluss zu verlieren. Mit dem TriMod CBM-Adapter kan…

    #1541 #2031LP #adapter #Bus #C128 #c64 #CBM #commodore #Disk #Drive #GPIB #IEC #IEEE488 #Laufwerk #PET #smd #TriMod

    dirkwouters.de/trimod-adapter-

  17. XoomFloppy Pro – Darf es etwas mehr sein?

    Das XoomFloppy ist schon ein geniales Gerät. Aber manchmal braucht man ein bisschen mehr an Anschlüssen. Nun könnte man das XoomFloppy umständlich erweitern, oder wie in diesem Fall eine “Pro”-Variante kreieren. Das Maximum bei einem Minimum an Platz war mein Ziel.

    #Bus #Cable #CBM #Disk #Drive #GPIB #IEC #IEEE488 #Micro #opencbm #parallel #PET #Printer #Pro #usb #XoomFloppy

    dirkwouters.de/xoomfloppy-pro/

  18. XoomFloppy – Die ZoomFloppy im Miniaturformat

    Der Anschluss eines Commodore-Diskettenlaufwerks oder Druckers an einen PC ist kein Problem mehr. Über USB ist dies mit verschiedenen Hardwarelösungen sehr einfach möglich. Was mir aber fehlte, war eine elegante Lösung. So kam ich auf die Idee de…

    #1541 #ATMega #Bus #c64 #CBM #commodore #Disk #Drive #IEC #opencbm #RetroInnovations #stick #usb #VC1541 #XoomFloppy #XUM1541 #ZoomFloppy

    dirkwouters.de/xoomfloppy/

  19. For legal reasons I must state that this chip is in fact blank. I would never do something as illegal and wrong as writing my own ROM chip for hardware I own, that hasn't been manufactured in 30 years, when there's a company (that didn't develop it) which is actively licensing said ROM. #amiga #cloanto #retrocomputing #eprom #grift #cbm #commodore
  20. For legal reasons I must state that this chip is in fact blank. I would never do something as illegal and wrong as writing my own ROM chip for hardware I own, that hasn't been manufactured in 30 years, when there's a company (that didn't develop it) which is actively licensing said ROM. #amiga #cloanto #retrocomputing #eprom #grift #cbm #commodore
  21. For legal reasons I must state that this chip is in fact blank. I would never do something as illegal and wrong as writing my own ROM chip for hardware I own, that hasn't been manufactured in 30 years, when there's a company (that didn't develop it) which is actively licensing said ROM. #amiga #cloanto #retrocomputing #eprom #grift #cbm #commodore
  22. For legal reasons I must state that this chip is in fact blank. I would never do something as illegal and wrong as writing my own ROM chip for hardware I own, that hasn't been manufactured in 30 years, when there's a company (that didn't develop it) which is actively licensing said ROM. #amiga #cloanto #retrocomputing #eprom #grift #cbm #commodore
  23. For legal reasons I must state that this chip is in fact blank. I would never do something as illegal and wrong as writing my own ROM chip for hardware I own, that hasn't been manufactured in 30 years, when there's a company (that didn't develop it) which is actively licensing said ROM. #amiga #cloanto #retrocomputing #eprom #grift #cbm #commodore