For some reason irmx-86 seems to be one of the things I documented the
least well. There's some details on my installation at
,
but I don't know that it has instructions on recompiling rmx and
enabling the bubble devices. I know somewhere I have notes on that....
Scott
On Fri, Jul 3, 2026 at 2:12 PM Ken Seefried <seefriek(a)gmail.com> wrote:
Scott...if you've documented your iRMX adventures
anywhere, I doubt I'm
the only one who would be really interested in it. I even have an iSBX
bubble memory board.
KJ
On Fri, Jul 3, 2026 at 11:24 AM Scott Baker <smbaker(a)gmail.com> wrote:
> I believe back when I was looking into this that I saw some of the boards
> that used the 80130 available on eBay. I hesitated to buy one, because I
> had no confidence I would be able to get the rest of the software stack
> working with it. As Ken mentioned, it's only part of iRMX there. Just the
> Nucleus, I think. Now I have managed to do a custom build of iRMX86 (to
> enable bubble memory), and there is a configuration menu where you can turn
> features on/off, so maybe there is a way to enable Nucleus-in-80130. It
> would be a very cool project to pursue.
>
> Scott
>
> On Fri, Jul 3, 2026 at 7:06 AM Ken Seefried via cctalk <
> cctalk(a)classiccmp.org> wrote:
>
>> There is some documentation for the i80130 in the iRMX databooks (see:
>>
https://bitsavers.org/pdf/intel/iRMX/). There's additional info in the
>> Intel 8086 developers manuals of the time, as well as the multibus boards
>> that used it (iSBC86/30?). As I understand it, it doesn't have *all* of
>> iRMX in ROM, so you still need additional software to make a system. I
>> have a couple I haven't yet taken time to do anything with.
>>
>> It is my understanding (probably wrong) that there is debate over
>> wether the 80150 actually shipped, and if so, did it ship in volume.
>> I've
>> never seen one nor know anyone who claims they have, but CP/M-86 isn't my
>> thing, so I'll leave one of the many experts around here to chime in.
>> YMMV.
>>
>> N.B.: If you're shopping, you want the "i80130-2", *not* the
"i80130-6"
>> or
>> "i80130-A". The former has the iRMX ROM; the latter is ROMless and was
>> used for the integrated peripherals. See:
>>
https://www.cpushack.com/2017/03/12/when-intel-runs-out-of-chips/
>>
>> KJ
>>
>> On Fri, Jul 3, 2026 at 6:34 AM Holger Veit via cctalk <
>> cctalk(a)classiccmp.org>
>> wrote:
>>
>> > Hi all,
>> >
>> > Around 1981, Intel made a 8086 companion chip named _operating system
>> > processor_ (i80130, and i80150, resp.) which comprised a ROM and some
>> > interrupt logic. The 80130 contained sort of a BIOS for iRMX86, the
>> > 80150 supported CP/M-86. Few info can be found at
>> >
https://en.wikipedia.org/wiki/Intel_80130, and a datasheet exists at
>> >
alldatasheet.com.
>> > Some lore is also found in some history pages, but not much more than
>> > the datasheet contains.
>> >
>> > Was the ROM content of both chips dumped and is available on the
>> > Internet somewhere, or does someone have such a system (supposedly some
>> > iAPX86/30) and is willing to make this public, e.g. upload to
>> bitsavers?
>> >
>> > THX to any pointers
>> >
>> > Kind Regards
>> > Holger
>> >
>> >
>> >
>>
>