Re: WTB: DEC Rainbow Expansion Memory

Found this file on an old Rainbow floppy. It has more detailed data. http://people.freebsd.org/~imp/RBMEMRY.TXT Sorry I didn't convert it to HTML... Warner On Sat, Apr 15, 2017 at 7:49 AM, Tapley, Mark via cctalk wrote: > On Apr 13, 2017, at 3:20 PM, Warner Losh via

Re: WTB: DEC Rainbow Expansion Memory

On Sat, Apr 15, 2017 at 9:56 AM, william degnan via cctalk wrote: >> >> >> Rainbow Memory Extension Option Installation Guide:EK-PCMKE-IN >> >> …Two versions of the memory extension option are available: a 64 K byte >> option (part number PC1XX-AA) and a 192K byte

Re: WTB: DEC Rainbow Expansion Memory

> > > Rainbow Memory Extension Option Installation Guide:EK-PCMKE-IN > > …Two versions of the memory extension option are available: a 64 K byte > option (part number PC1XX-AA) and a 192K byte option (part number > PC1XX-AB). The memory option is installed in the J6 connector … > … Both

Re: WTB: DEC Rainbow Expansion Memory

On Apr 13, 2017, at 3:20 PM, Warner Losh via cctalk wrote: > On Thu, Apr 13, 2017 at 12:00 PM, shad via cctech > wrote: >> Hello, >> I'm in the pretty same condition, I have a Rainbow 100B without memory >> expansion. >> Not sure however, about

Re: WTB: DEC Rainbow Expansion Memory

On Thu, Apr 13, 2017 at 12:00 PM, shad via cctech wrote: > Hello, > I'm in the pretty same condition, I have a Rainbow 100B without memory > expansion. > Not sure however, about the correct board number, which would fit the 100B. > What should I search for? The DEC

Re: WTB: DEC Rainbow Expansion Memory

Hello, I'm in the pretty same condition, I have a Rainbow 100B without memory expansion. Not sure however, about the correct board number, which would fit the 100B. What should I search for? Thanks Andrea

Re: WTB: DEC Rainbow Expansion Memory

On 04/12/2017 12:41 PM, Warner Losh via cctech wrote: > For you and me both. I was getting read errors on my RX-50, so I > tried to swap in a new drive, and now that's all I get as well. Guess > I'll have to figure out another way to get the Venix/86R disks > copied. Got a PC with a 5.25" HD

Re: WTB: DEC Rainbow Expansion Memory

I’m glad to hear that you still have some possibilities there. I’ve go nothing on mine. I guess I’ll have to start looking for another RX-50 disk drive controller board. Since those are as scarce as the memory expansion boards, I’m not very hopeful. Guess it’ll be time to sell the parts on

Re: WTB: DEC Rainbow Expansion Memory

Thanks! I have another experiment to try, but need some parts for that, so it will have to wait until they arrive. the unit has been a bit flakey this time, so I don't know if I need a new controller board, new RX-50 or a new power supply. Or a ROM refresh Warner On Wed, Apr 12, 2017 at 1:47

Re: WTB: DEC Rainbow Expansion Memory

I guess it doesn’t make any difference now. I reassembled the computer and now I get a message 28 “RX50 Controller Board" failure during POST. I’ve taken it apart and put it back together several times, but I cannot clear the failure. This really has been a bad day! smp -- Stephen M. Pereira

Re: WTB: DEC Rainbow Expansion Memory

On Wed, Apr 12, 2017 at 1:00 PM, Stephen Pereira wrote: > Thanks for your response. > > Just to be certain, I just tore it all down and reconfirmed, in case my > memory was playing any tricks. > > I have a PC-100B with no expansion card. > > Thanks again for the advice.

Re: WTB: DEC Rainbow Expansion Memory

Wow. Since misery loves company, I guess we make a great pair today! Good luck with your equipment! smp -- Stephen M. Pereira Bedford, NH 03110 KB1SXE > On Apr 12, 2017, at 3:41 PM, Warner Losh wrote: > > For you and me both. I was getting read errors on my RX-50, so I

Re: WTB: DEC Rainbow Expansion Memory

For you and me both. I was getting read errors on my RX-50, so I tried to swap in a new drive, and now that's all I get as well. Guess I'll have to figure out another way to get the Venix/86R disks copied. Warner On Wed, Apr 12, 2017 at 1:23 PM, Stephen Pereira wrote:

Re: WTB: DEC Rainbow Expansion Memory

Thanks for your response. Just to be certain, I just tore it all down and reconfirmed, in case my memory was playing any tricks. I have a PC-100B with no expansion card. Thanks again for the advice. smp -- Stephen M. Pereira Bedford, NH 03110 KB1SXE > On Apr 12, 2017, at 2:20 PM, Warner

Re: WTB: DEC Rainbow Expansion Memory

On Wed, Apr 12, 2017 at 11:06 AM, Stephen Pereira via cctech wrote: > I’m looking for expansion memory for my DEC Rainbow. > > I currently have 128K RAM, and I’d like to have 256K RAM, so I can actually > use the Lotus 1-2-3 that I recently purchased (without thinking). >

WTB: DEC Rainbow Expansion Memory

I’m looking for expansion memory for my DEC Rainbow. I currently have 128K RAM, and I’d like to have 256K RAM, so I can actually use the Lotus 1-2-3 that I recently purchased (without thinking). Any suggestions? Thanks, smp — Stephen M. Pereira Bedford, NH 03110 KB1SXE