I have ram for the 102 at arcadeshopper.com Greg
On Mon, Jan 28, 2019 at 8:15 AM VANDEN BOSSCHE JAN < jan.vandenboss...@vivaqua.be> wrote: > > All it means is - you need to upgrade your RAM, to enjoy the benefits of > more RAM. > > > > That's the bottom line, and that's all I need to know. > > > > Now, where can I buy another 8 K RAM chip that fits a Model 102? > > > > Greetings from the TyRannoSaurus > > Jan-80 """"" > > @ work ( @ @ ) > > --------------.ooo--(_)--ooo.--- > > > > > > *From:* M100 [mailto:m100-boun...@lists.bitchin100.com] *On Behalf Of *Stephen > Adolph > *Sent:* zondag 27 januari 2019 16:55 > *To:* m...@bitchin100.com > *Subject:* Re: [M100] REX in a sub-standard machine > > > > Classic REX does not have any RAM on it, and it is plug and play meaning > there is no hardware /WR signal which is needed for RAM to work. > > > > So, yes, a REX enabled machine with limited RAM is still a machine with > limited RAM. No shortcoming of REX there. > > In fact adding REX to any machine brings all the same benefits. Adding > RAM to the full extent provides those benefits. They are independent. > > > > That was partly my motivation for QUAD, but that is a separate story. > > > > All it means is - you need to upgrade your RAM, to enjoy the benefits of > more RAM. > > > > There is a soon to be released all RAM REX - called REXCPM. > > The purpose here is to obviously run CPM on M100/T102, but it has a side > benefit of doing a full RAM upgrade. > > (another reason to not stress so much about QUAD). > > > > REXCPM has 2MB of SRAM. It is based on bank switching like REX, but it > also replaces the internal SRAM. So, you can map any 32k block of SRAM > into the optrom space, and you can switch any 16k block into each of the > two upper ram 16k blocks. > > This arrangement can be used to implement all the functions of REX but it > also delivers the key thing needed for CP/M, that being the ability to use > RAM blocks as a RAM DISK. > > > > In M100, REXCPM is plug and play, using the system bus connector and the > Optrom socket. > > In T102, REXCPM needs a small hardware change, and uses the 4th memory > chip socket and the Optrom socket. > > > > > > > > > > > > On Fri, Jan 25, 2019 at 4:56 PM Jan Vanden Bossche <jan80...@yahoo.com> > wrote: > > Yes, I think so. > > > > But that also means I had the concept wrong. I thought that the > RAM-switching was done ON the REX, and that the live RAM was on the REX. If > I understand it now - sorry I'm slow - the RAM-image is copied into the > live RAM of the machine. > > > > But, that also mean that, in order to be able to take full advantage of > REX, you do need a 32KB machine, or upgrade to it. > > > > Sad if you happen to find an 8KB Model 100, or a 24 KB Model 102... :-/ > > > > Greetings from the TyRannoSaurus > Jan-80 > > > > VIVAQUA et HYDROBRU ont fusionné. > VIVAQUA est votre société d'eau en Région de Bruxelles-Capitale. > > VIVAQUA en HYDROBRU zijn gefusioneerd. > VIVAQUA is uw waterbedrijf in het Brusselse Hoofdstedelijk Gewest. > > Rejoignez-nous sur Facebook - Volg ons op Facebook > > DISCLAIMER > > Pensez à l’environnement, n’imprimez cette page et ses annexes que si > c’est nécessaire. Ce message électronique, y compris ses annexes, est > confidentiel et réservé à l’attention de son destinataire. Si vous n’êtes > pas le destinataire de ce message, merci de le détruire et d’en informer > l’expéditeur. Toute divulgation, copie ou utilisation de ce mail est dans > ce cas interdite. La sécurité et l’exactitude des transmissions de messages > électroniques ne peuvent être garanties. > > Denk aan het milieu; druk deze pagina en de bijlagen alleen af als het > nodig is. Dit e-mailbericht (inclusief zijn bijlagen) is vertrouwelijk en > is uitsluitend bestemd voor de geadresseerde. Als dit bericht niet voor u > bestemd is, wordt u verzocht het te wissen en de afzender te informeren. > Het is in dat geval niet toegestaan dit bericht te verspreiden, te kopiëren > of te gebruiken. We kunnen niet garanderen dat de gegevensoverdracht via > het internet veilig en nauwkeurig is. > >
