Re: [M100] REX3?
Those floppies drives are rare! On Fri, Mar 13, 2020 at 00:25 Tim Russell wrote: > I still have one, and a PX-4 as well. Both can also use a battery-powered > serial-connected 3.5 floppy drive, which I also happily still have. > > > On Wed, Mar 11, 2020, 13:51 Tom Wilson wrote: > >> Also, if you're looking for an 8-bit CP/M laptop, the Epson PX-8 is >> exactly that. It runs CP/M from ROM and uses a RAM disk for storage. >> (Strangely, it uses a cassette for mass storage.) >> > -- Faith without Works is Dead...
Re: [M100] REX3?
I still have one, and a PX-4 as well. Both can also use a battery-powered serial-connected 3.5 floppy drive, which I also happily still have. On Wed, Mar 11, 2020, 13:51 Tom Wilson wrote: > Also, if you're looking for an 8-bit CP/M laptop, the Epson PX-8 is > exactly that. It runs CP/M from ROM and uses a RAM disk for storage. > (Strangely, it uses a cassette for mass storage.) >
Re: [M100] REX3?
On Wed, Mar 11, 2020 at 1:00 PM Kevin Becker wrote: > So, plug and play in M100. Still evaluating if it can be "solder free" > in T102 using a clip. Both solutions need the adapter board. > > > Thanks, Kevin. That's pretty much what I expected to hear. I was expecting some sort of additional RAM disk, since CP/M really needs the full 64K for doing its own thing (and CP/M 3 could use banking to get a lot more than 64K of RAM of course, by that point, DOS was the new king, and CP/M was already on its way to the grave.)
Re: [M100] REX3?
I have about 6, a few with the 64k multiunit for the RAM driver. I have a dual-serial Rpi that provides 4 floppies using Vfloppy and a serial console on the other port. I need to start selling some! On Wed, Mar 11, 2020 at 14:51 Tom Wilson wrote: > Also, if you're looking for an 8-bit CP/M laptop, the Epson PX-8 is > exactly that. It runs CP/M from ROM and uses a RAM disk for storage. > (Strangely, it uses a cassette for mass storage.) > > I had one of those, too, once upon a time... and I also don't know where > that went > > Tom Wilson > wilso...@gmail.com > (619)940-6311 > K6ABZ > > > On Wed, Mar 11, 2020 at 12:47 PM Tom Wilson wrote: > >> This has me curious... IIRC, the REX ROM mod requires that I disconnect >> the CS line on my internal ROM chip. On the T102, this is surface mounted. >> If you figure out how to build a 64K "all RAM" memory model, is this also >> going to require cutting the CS line on the ROM, or is there a better way >> to do it? >> >> I love CP/M, but I'm not quite in a place where I want to modify SMT >> components. If this requires hardware changes, I'll probably grab a T-100 >> for that purpose (or maybe even try to find a T-200). >> >> >> Tom Wilson >> wilso...@gmail.com >> (619)940-6311 >> K6ABZ >> >> >> On Wed, Mar 11, 2020 at 11:49 AM Stephen Adolph >> wrote: >> >>> REX2 was an original attempt at a module that supported CP/M. It did >>> not survive! I think I made 6 of them total. Those 6 worked fine as a >>> standard REX. >>> With only 128k of RAM, it would have needed some pretty fancy software >>> to turn a flash chip into a read/write disk drive. >>> >>> REXCPM takes a different approach - no flash, just a whopping big SRAM. >>> >>> Plus many other improvements in design that I have aggregated up over >>> all the different REX related activities. >>> >>> >>> >>> On Wed, Mar 11, 2020 at 2:44 PM Abraham Moller >>> wrote: >>> Speaking of the REX3, was the REX2 ever released? It sounds like it would run CP/M and have flash storage: http://bitchin100.com/wiki/index.php?title=REX2_-_custom_REX_for_CP/M_support Jon On Wed, Mar 11, 2020 at 2:30 PM Tom Wilson wrote: > Kids are great for that. I had my daughter crimping RJ45s during > Christmas break. She is better at it than I am. > > On Wed, Mar 11, 2020 at 10:27 AM Stephen Adolph > wrote: > >> It is, I'd be happy to put one together. I just send out my last one >> in stock. >> I can get going on a build and get back to you? >> My kids are my new shipping department. Fun times. >> >> >> On Wed, Mar 11, 2020 at 1:20 PM Kurt McCullum >> wrote: >> >>> Steve is your go-to for that. If he doesn't have any on hand, I do >>> have an extra one I could part with. >>> >>> Kurt >>> >>> On Wed, Mar 11, 2020, at 10:15 AM, Jason Benson wrote: >>> >>> I finally got my NEC PC 8201A working last night, and I with all the >>> fun I've been having with REX on my M100 I was wondering if REX3 is >>> available anywhere. >>> -Jason >>> >>> >>> -- > Tom Wilson > wilso...@gmail.com > (619)940-6311 > K6ABZ > -- Faith without Works is Dead...
Re: [M100] REX3?
This is from an earlier reply about the present state of the hardware. I've got a T102 with a regular REX so I used this as an excuse to pick up a M100 that I'm in the process of refurbishing as soon as the parts come in. In M100 and T102, you need an additional board 1) in M100, the adapter plugs into the system bus and connects via a 3 wire cable to REXCPM. No soldering, plug and play. 2) in T102, the adapter plugs into the adjacent 8kRAM socket, and connects via a 3 wire cable to REXCPM. An additional wire needs to run to M37 Pin 11. I'm currently evaluating if a clip can be used or if it needs to be soldered. So, plug and play in M100. Still evaluating if it can be "solder free" in T102 using a clip. Both solutions need the adapter board. -- Original Message -- From: "Tom Wilson" To: "M100 Mailing List" Sent: 3/11/2020 3:47:58 PM Subject: Re: [M100] REX3? This has me curious... IIRC, the REX ROM mod requires that I disconnect the CS line on my internal ROM chip. On the T102, this is surface mounted. If you figure out how to build a 64K "all RAM" memory model, is this also going to require cutting the CS line on the ROM, or is there a better way to do it? I love CP/M, but I'm not quite in a place where I want to modify SMT components. If this requires hardware changes, I'll probably grab a T-100 for that purpose (or maybe even try to find a T-200). Tom Wilson wilso...@gmail.com (619)940-6311 K6ABZ On Wed, Mar 11, 2020 at 11:49 AM Stephen Adolph wrote: REX2 was an original attempt at a module that supported CP/M. It did not survive! I think I made 6 of them total. Those 6 worked fine as a standard REX. With only 128k of RAM, it would have needed some pretty fancy software to turn a flash chip into a read/write disk drive. REXCPM takes a different approach - no flash, just a whopping big SRAM. Plus many other improvements in design that I have aggregated up over all the different REX related activities. On Wed, Mar 11, 2020 at 2:44 PM Abraham Moller wrote: Speaking of the REX3, was the REX2 ever released? It sounds like it would run CP/M and have flash storage: http://bitchin100.com/wiki/index.php?title=REX2_-_custom_REX_for_CP/M_support Jon On Wed, Mar 11, 2020 at 2:30 PM Tom Wilson wrote: Kids are great for that. I had my daughter crimping RJ45s during Christmas break. She is better at it than I am. On Wed, Mar 11, 2020 at 10:27 AM Stephen Adolph wrote: It is, I'd be happy to put one together. I just send out my last one in stock. I can get going on a build and get back to you? My kids are my new shipping department. Fun times. On Wed, Mar 11, 2020 at 1:20 PM Kurt McCullum wrote: Steve is your go-to for that. If he doesn't have any on hand, I do have an extra one I could part with. Kurt On Wed, Mar 11, 2020, at 10:15 AM, Jason Benson wrote: I finally got my NEC PC 8201A working last night, and I with all the fun I've been having with REX on my M100 I was wondering if REX3 is available anywhere. -Jason -- Tom Wilson wilso...@gmail.com (619)940-6311 K6ABZ
Re: [M100] REX3?
Also, if you're looking for an 8-bit CP/M laptop, the Epson PX-8 is exactly that. It runs CP/M from ROM and uses a RAM disk for storage. (Strangely, it uses a cassette for mass storage.) I had one of those, too, once upon a time... and I also don't know where that went Tom Wilson wilso...@gmail.com (619)940-6311 K6ABZ On Wed, Mar 11, 2020 at 12:47 PM Tom Wilson wrote: > This has me curious... IIRC, the REX ROM mod requires that I disconnect > the CS line on my internal ROM chip. On the T102, this is surface mounted. > If you figure out how to build a 64K "all RAM" memory model, is this also > going to require cutting the CS line on the ROM, or is there a better way > to do it? > > I love CP/M, but I'm not quite in a place where I want to modify SMT > components. If this requires hardware changes, I'll probably grab a T-100 > for that purpose (or maybe even try to find a T-200). > > > Tom Wilson > wilso...@gmail.com > (619)940-6311 > K6ABZ > > > On Wed, Mar 11, 2020 at 11:49 AM Stephen Adolph > wrote: > >> REX2 was an original attempt at a module that supported CP/M. It did not >> survive! I think I made 6 of them total. Those 6 worked fine as a >> standard REX. >> With only 128k of RAM, it would have needed some pretty fancy software to >> turn a flash chip into a read/write disk drive. >> >> REXCPM takes a different approach - no flash, just a whopping big SRAM. >> >> Plus many other improvements in design that I have aggregated up over >> all the different REX related activities. >> >> >> >> On Wed, Mar 11, 2020 at 2:44 PM Abraham Moller >> wrote: >> >>> Speaking of the REX3, was the REX2 ever released? It sounds like it >>> would run CP/M and have flash storage: >>> http://bitchin100.com/wiki/index.php?title=REX2_-_custom_REX_for_CP/M_support >>> >>> Jon >>> >>> >>> On Wed, Mar 11, 2020 at 2:30 PM Tom Wilson wrote: >>> Kids are great for that. I had my daughter crimping RJ45s during Christmas break. She is better at it than I am. On Wed, Mar 11, 2020 at 10:27 AM Stephen Adolph wrote: > It is, I'd be happy to put one together. I just send out my last one > in stock. > I can get going on a build and get back to you? > My kids are my new shipping department. Fun times. > > > On Wed, Mar 11, 2020 at 1:20 PM Kurt McCullum > wrote: > >> Steve is your go-to for that. If he doesn't have any on hand, I do >> have an extra one I could part with. >> >> Kurt >> >> On Wed, Mar 11, 2020, at 10:15 AM, Jason Benson wrote: >> >> I finally got my NEC PC 8201A working last night, and I with all the >> fun I've been having with REX on my M100 I was wondering if REX3 is >> available anywhere. >> -Jason >> >> >> -- Tom Wilson wilso...@gmail.com (619)940-6311 K6ABZ >>>
Re: [M100] REX3?
This has me curious... IIRC, the REX ROM mod requires that I disconnect the CS line on my internal ROM chip. On the T102, this is surface mounted. If you figure out how to build a 64K "all RAM" memory model, is this also going to require cutting the CS line on the ROM, or is there a better way to do it? I love CP/M, but I'm not quite in a place where I want to modify SMT components. If this requires hardware changes, I'll probably grab a T-100 for that purpose (or maybe even try to find a T-200). Tom Wilson wilso...@gmail.com (619)940-6311 K6ABZ On Wed, Mar 11, 2020 at 11:49 AM Stephen Adolph wrote: > REX2 was an original attempt at a module that supported CP/M. It did not > survive! I think I made 6 of them total. Those 6 worked fine as a > standard REX. > With only 128k of RAM, it would have needed some pretty fancy software to > turn a flash chip into a read/write disk drive. > > REXCPM takes a different approach - no flash, just a whopping big SRAM. > > Plus many other improvements in design that I have aggregated up over all > the different REX related activities. > > > > On Wed, Mar 11, 2020 at 2:44 PM Abraham Moller wrote: > >> Speaking of the REX3, was the REX2 ever released? It sounds like it would >> run CP/M and have flash storage: >> http://bitchin100.com/wiki/index.php?title=REX2_-_custom_REX_for_CP/M_support >> >> Jon >> >> >> On Wed, Mar 11, 2020 at 2:30 PM Tom Wilson wrote: >> >>> Kids are great for that. I had my daughter crimping RJ45s during >>> Christmas break. She is better at it than I am. >>> >>> On Wed, Mar 11, 2020 at 10:27 AM Stephen Adolph >>> wrote: >>> It is, I'd be happy to put one together. I just send out my last one in stock. I can get going on a build and get back to you? My kids are my new shipping department. Fun times. On Wed, Mar 11, 2020 at 1:20 PM Kurt McCullum wrote: > Steve is your go-to for that. If he doesn't have any on hand, I do > have an extra one I could part with. > > Kurt > > On Wed, Mar 11, 2020, at 10:15 AM, Jason Benson wrote: > > I finally got my NEC PC 8201A working last night, and I with all the > fun I've been having with REX on my M100 I was wondering if REX3 is > available anywhere. > -Jason > > > -- >>> Tom Wilson >>> wilso...@gmail.com >>> (619)940-6311 >>> K6ABZ >>> >>
Re: [M100] REX3?
REX2 was an original attempt at a module that supported CP/M. It did not survive! I think I made 6 of them total. Those 6 worked fine as a standard REX. With only 128k of RAM, it would have needed some pretty fancy software to turn a flash chip into a read/write disk drive. REXCPM takes a different approach - no flash, just a whopping big SRAM. Plus many other improvements in design that I have aggregated up over all the different REX related activities. On Wed, Mar 11, 2020 at 2:44 PM Abraham Moller wrote: > Speaking of the REX3, was the REX2 ever released? It sounds like it would > run CP/M and have flash storage: > http://bitchin100.com/wiki/index.php?title=REX2_-_custom_REX_for_CP/M_support > > Jon > > > On Wed, Mar 11, 2020 at 2:30 PM Tom Wilson wrote: > >> Kids are great for that. I had my daughter crimping RJ45s during >> Christmas break. She is better at it than I am. >> >> On Wed, Mar 11, 2020 at 10:27 AM Stephen Adolph >> wrote: >> >>> It is, I'd be happy to put one together. I just send out my last one in >>> stock. >>> I can get going on a build and get back to you? >>> My kids are my new shipping department. Fun times. >>> >>> >>> On Wed, Mar 11, 2020 at 1:20 PM Kurt McCullum >>> wrote: >>> Steve is your go-to for that. If he doesn't have any on hand, I do have an extra one I could part with. Kurt On Wed, Mar 11, 2020, at 10:15 AM, Jason Benson wrote: I finally got my NEC PC 8201A working last night, and I with all the fun I've been having with REX on my M100 I was wondering if REX3 is available anywhere. -Jason -- >> Tom Wilson >> wilso...@gmail.com >> (619)940-6311 >> K6ABZ >> >
Re: [M100] REX3?
Speaking of the REX3, was the REX2 ever released? It sounds like it would run CP/M and have flash storage: http://bitchin100.com/wiki/index.php?title=REX2_-_custom_REX_for_CP/M_support Jon On Wed, Mar 11, 2020 at 2:30 PM Tom Wilson wrote: > Kids are great for that. I had my daughter crimping RJ45s during Christmas > break. She is better at it than I am. > > On Wed, Mar 11, 2020 at 10:27 AM Stephen Adolph > wrote: > >> It is, I'd be happy to put one together. I just send out my last one in >> stock. >> I can get going on a build and get back to you? >> My kids are my new shipping department. Fun times. >> >> >> On Wed, Mar 11, 2020 at 1:20 PM Kurt McCullum wrote: >> >>> Steve is your go-to for that. If he doesn't have any on hand, I do have >>> an extra one I could part with. >>> >>> Kurt >>> >>> On Wed, Mar 11, 2020, at 10:15 AM, Jason Benson wrote: >>> >>> I finally got my NEC PC 8201A working last night, and I with all the fun >>> I've been having with REX on my M100 I was wondering if REX3 is available >>> anywhere. >>> -Jason >>> >>> >>> -- > Tom Wilson > wilso...@gmail.com > (619)940-6311 > K6ABZ >
Re: [M100] REX3?
Kids are great for that. I had my daughter crimping RJ45s during Christmas break. She is better at it than I am. On Wed, Mar 11, 2020 at 10:27 AM Stephen Adolph wrote: > It is, I'd be happy to put one together. I just send out my last one in > stock. > I can get going on a build and get back to you? > My kids are my new shipping department. Fun times. > > > On Wed, Mar 11, 2020 at 1:20 PM Kurt McCullum wrote: > >> Steve is your go-to for that. If he doesn't have any on hand, I do have >> an extra one I could part with. >> >> Kurt >> >> On Wed, Mar 11, 2020, at 10:15 AM, Jason Benson wrote: >> >> I finally got my NEC PC 8201A working last night, and I with all the fun >> I've been having with REX on my M100 I was wondering if REX3 is available >> anywhere. >> -Jason >> >> >> -- Tom Wilson wilso...@gmail.com (619)940-6311 K6ABZ
Re: [M100] REX3?
It is, I'd be happy to put one together. I just send out my last one in stock. I can get going on a build and get back to you? My kids are my new shipping department. Fun times. On Wed, Mar 11, 2020 at 1:20 PM Kurt McCullum wrote: > Steve is your go-to for that. If he doesn't have any on hand, I do have an > extra one I could part with. > > Kurt > > On Wed, Mar 11, 2020, at 10:15 AM, Jason Benson wrote: > > I finally got my NEC PC 8201A working last night, and I with all the fun > I've been having with REX on my M100 I was wondering if REX3 is available > anywhere. > -Jason > > >
Re: [M100] REX3?
Steve is your go-to for that. If he doesn't have any on hand, I do have an extra one I could part with. Kurt On Wed, Mar 11, 2020, at 10:15 AM, Jason Benson wrote: > I finally got my NEC PC 8201A working last night, and I with all the fun I've > been having with REX on my M100 I was wondering if REX3 is available anywhere. > -Jason
[M100] REX3?
I finally got my NEC PC 8201A working last night, and I with all the fun I've been having with REX on my M100 I was wondering if REX3 is available anywhere. -Jason
