Re: [M100] 8K RAM Chip

On Sat, Mar 17, 2018 at 8:44 PM, Chris Kmiec wrote: > I'm definitely down for a couple if you are adding up the requests. ok, let's maybe take out the requests off the list? I'll make a list and see how many modules would be and then calculate a price. F

Re: [M100] 8K RAM Chip

t; > > > - Original Message - > > From: "Francesco Messineo" <francesco.messi...@gmail.com> > > To: <m...@bitchin100.com> > > Sent: Saturday, March 17, 2018 5:36 AM > > Subject: Re: [M100] 8K RAM Chip > > > > > >>

Re: [M100] 8K RAM Chip

an issue). > > m > > - Original Message - > From: "Francesco Messineo" <francesco.messi...@gmail.com> > To: <m...@bitchin100.com> > Sent: Saturday, March 17, 2018 5:36 AM > Subject: Re: [M100] 8K RAM Chip > > >> Hi Mike, >> >> On

Re: [M100] 8K RAM Chip

sn't even arrived yet, I suspect postage would be an issue). m - Original Message - From: "Francesco Messineo" <francesco.messi...@gmail.com> To: <m...@bitchin100.com> Sent: Saturday, March 17, 2018 5:36 AM Subject: Re: [M100] 8K RAM Chip > Hi Mike, > > On

Re: [M100] 8K RAM Chip

Awesome! Thank you so much! On Sat, Mar 17, 2018, 5:36 AM Francesco Messineo < francesco.messi...@gmail.com> wrote: > Hi Mike, > > On Fri, Mar 16, 2018 at 6:00 PM, Mike Stein wrote: > > Hi Frank, > > > > Any chance you'd share the PCB files for your RAM modules so we can >

Re: [M100] 8K RAM Chip

Hi Frank, Any chance you'd share the PCB files for your RAM modules so we can build some? m

Re: [M100] 8K RAM Chip

- Original Message - From: "Francesco Messineo" <francesco.messi...@gmail.com> To: <m...@bitchin100.com> Sent: Friday, March 16, 2018 11:56 AM Subject: Re: [M100] 8K RAM Chip >>> I think it can be done, but you anyway need logic to reconstruct th

Re: [M100] 8K RAM Chip

On Fri, Mar 16, 2018 at 4:02 PM, Mike Stein <mhs.st...@gmail.com> wrote: > - Original Message - > From: "Francesco Messineo" <francesco.messi...@gmail.com> > To: <m...@bitchin100.com> > Sent: Friday, March 16, 2018 5:19 AM > Subject: Re: [M100]

Re: [M100] 8K RAM Chip

- Original Message - From: "Francesco Messineo" <francesco.messi...@gmail.com> To: <m...@bitchin100.com> Sent: Friday, March 16, 2018 5:19 AM Subject: Re: [M100] 8K RAM Chip On Thu, Mar 15, 2018 at 7:57 PM, Mike Stein <mhs.st...@gmail.com> wrote: >>

Re: [M100] 8K RAM Chip

er. > > m > > > > - Original Message - > From: "Francesco Messineo" <francesco.messi...@gmail.com> > To: <m...@bitchin100.com> > Sent: Thursday, March 15, 2018 1:27 PM > Subject: Re: [M100] 8K RAM Chip > > > On Thu, Mar 15, 2018 at 6:08 PM, Mike

Re: [M100] 8K RAM Chip

Geez guys, can you trim your emails, especially if you're receiving the list in digest mode? On 16/03/18 05:43, Fugu ME100 wrote: Hi Frank How did you perform the current drain tests? Anyone know of a source for 700mil IC Sockets? Thanks! On 15/3/18, 10:27 AM, "M100 on behalf of Francesco

Re: [M100] 8K RAM Chip

chip and use diodes for the encoding >>>>>instead of >>>>> the encoder IC. >>>> >>>>A word of warning about using diodes to combine the selects: all the >>>>low power cmos rams need close to Vdd or Vss levels on t

Re: [M100] 8K RAM Chip

m> To: <m...@bitchin100.com> Sent: Thursday, March 15, 2018 1:27 PM Subject: Re: [M100] 8K RAM Chip On Thu, Mar 15, 2018 at 6:08 PM, Mike Stein <mhs.st...@gmail.com> wrote: > Yeah, there are a number of ways to deal with the non-standard RAM modules > in an M100; the pin spacing o

Re: [M100] 8K RAM Chip

levels on the select to >>>have the lowest current consumption when in sleep mode (Vdd circa 3V >>>inside the M100). >>>If the ram chip doesn't go in the correct standby mode, the internal >>>battery of the M100 is drained in about one day instead of

Re: [M100] 8K RAM Chip

urrent consumption when in sleep mode (Vdd circa 3V >>inside the M100). >>If the ram chip doesn't go in the correct standby mode, the internal >>battery of the M100 is drained in about one day instead of the usual >>one month (tests done in my Olivetti M10 several times).

Re: [M100] 8K RAM Chip

mption when in sleep mode (Vdd circa 3V >inside the M100). >If the ram chip doesn't go in the correct standby mode, the internal >battery of the M100 is drained in about one day instead of the usual >one month (tests done in my Olivetti M10 several times). > > >Frank >> >

Re: [M100] 8K RAM Chip

ernal battery of the M100 is drained in about one day instead of the usual one month (tests done in my Olivetti M10 several times). Frank > > - Original Message - > From: Fugu ME100 > To: m...@bitchin100.com > Sent: Wednesday, March 14, 2018 5:14 PM > Subject: Re: [M100] 8

Re: [M100] 8K RAM Chip

:14 PM Subject: Re: [M100] 8K RAM Chip If you did not want to use the Libero method you could use a 74HC148 (or similar) 8 to 3 line priority decoder and put the 4 CSx- lines into the upper or lower 4 inputs of the ‘148. That would recreate 2 address lines and a new CS- for the 8Kx8 SRAM

Re: [M100] 8K RAM Chip

y, March 14, 2018 at 12:19 PM To: <m...@bitchin100.com<mailto:m...@bitchin100.com>> Subject: Re: [M100] 8K RAM Chip It needs more than just remapping the signals; the required upper two address lines are not available on the sockets so you either need to add logic to recreate them or

Re: [M100] 8K RAM Chip

ok is there a source for the 100 chips? or a pcb? >>> >>> Greg >>> >>> On Wed, Mar 14, 2018 at 12:02 AM, Fugu ME100 <b4me...@hotmail.com> >>> wrote: >>> >>>> Just the 102, it uses a standard pin out. The 100 uses a special RAM

Re: [M100] 8K RAM Chip

, March 14, 2018 1:22 PM Subject: Re: [M100] 8K RAM Chip thanks! It seems like we should be able to use the 8x8 chip from the 102 with some kludging of lines.. they are pretty close.. Greg On Wed, Mar 14, 2018 at 10:08 AM, Brian White <bw.al...@gmail.com> wrote: There are at

Re: [M100] 8K RAM Chip

;>>> >>>>>>>>> The chips are available they are standard 8Kx8 SRAM. Should be >>>>>>>>> able to >>>>>>>>> find some on line. >>>>>>>>> >>>>>>>>> Unfortuna

Re: [M100] 8K RAM Chip

..@bitchin100.com> >> Date: Tuesday, March 13, 2018 at 10:58 PM >> To: <m...@bitchin100.com> >> Subject: Re: [M100] 8K RAM Chip >> >> oh wait these are 32x8 :) are these ones on ebay for the 100 or 102? or >> both? >> >> Greg >> >&g

Re: [M100] 8K RAM Chip

half of Gregory > McGill <arcadeshop...@gmail.com> > Reply-To: <m...@bitchin100.com> > Date: Tuesday, March 13, 2018 at 10:58 PM > To: <m...@bitchin100.com> > Subject: Re: [M100] 8K RAM Chip > > oh wait these are 32x8 :) are these ones on ebay for the 100 or 102?

Re: [M100] 8K RAM Chip

...@bitchin100.com<mailto:m...@bitchin100.com>> Date: Tuesday, March 13, 2018 at 10:58 PM To: <m...@bitchin100.com<mailto:m...@bitchin100.com>> Subject: Re: [M100] 8K RAM Chip oh wait these are 32x8 :) are these ones on ebay for the 100 or 102? or both? Greg On Fri, Mar

Re: [M100] 8K RAM Chip

oh wait these are 32x8 :) are these ones on ebay for the 100 or 102? or both? Greg On Fri, Mar 9, 2018 at 7:33 PM, Gregory McGill wrote: > if you have the pinouts I have a bunch of 8x8 srams around for TI99 > projects > > Greg > > On Fri, Mar 9, 2018 at 6:11 PM, Ken

Re: [M100] 8K RAM Chip

I have extras left over from my last 102 repair. I'll sell you one for $3 plus postage. On Mar 9, 2018 10:33 PM, "Gregory McGill" wrote: > if you have the pinouts I have a bunch of 8x8 srams around for TI99 > projects > > Greg > > On Fri, Mar 9, 2018 at 6:11 PM, Ken

Re: [M100] 8K RAM Chip

if you have the pinouts I have a bunch of 8x8 srams around for TI99 projects Greg On Fri, Mar 9, 2018 at 6:11 PM, Ken Pettit wrote: > Ahh, I see now the original email stated 102. So yeah, those will work. > > Ken > > > On 3/9/18 6:09 PM, Fugu ME100 wrote: > >> More if it

Re: [M100] 8K RAM Chip

to the RAM chip. m - Original Message - From: "Ken Pettit" <petti...@gmail.com> To: <m...@bitchin100.com> Sent: Friday, March 09, 2018 9:11 PM Subject: Re: [M100] 8K RAM Chip > All, > > Those $3 chips work fine in the Model 102, but I believe the p

Re: [M100] 8K RAM Chip

Ahh, I see now the original email stated 102. So yeah, those will work. Ken On 3/9/18 6:09 PM, Fugu ME100 wrote: More if it was R/S :) This is the one https://www.ebay.com/itm/1-TOSHIBA-TC5565PL-15-64K-8Kx8-SRAM-CMOS-STATIC-RA

Re: [M100] 8K RAM Chip

All, Those $3 chips work fine in the Model 102, but I believe the pinout for M100 RAM expansion is slightly different and doesn't plug in directly. I would have to double check, but I recall the SRAM chips were always on a carrier PCB to remap the pinout. Ken On 3/9/18 6:07 PM, Peter

Re: [M100] 8K RAM Chip

More if it was R/S :) This is the one https://www.ebay.com/itm/1-TOSHIBA-TC5565PL-15-64K-8Kx8-SRAM-CMOS-STATIC-RA M-5V-150NS-28-PIN-PDIP/321974484773?hash=item4af72cbf25:g:ldEAAOSwGotWlWd9 you mean? On 9/3/18, 6:07 PM, "M100 on behalf of Peter Vollan"

Re: [M100] 8K RAM Chip

Wow, a quick check reveals a 8kX8 SRAM on ebay for $3. Didn't those "memory modules" cost about $30? On 9 March 2018 at 17:57, Chris Kmiec wrote: > Great, I'll go looking on the intrawebs :) > > You don't happen to have another REX, do you? :) > > Chris > > On Fri, Mar 9,

Re: [M100] 8K RAM Chip

Great, I'll go looking on the intrawebs :) You don't happen to have another REX, do you? :) Chris On Fri, Mar 9, 2018 at 7:01 PM, Fugu ME100 wrote: > The chips are available they are standard 8Kx8 SRAM. Should be able to > find some on line. > > Unfortunately the QUAD is

Re: [M100] 8K RAM Chip

The chips are available they are standard 8Kx8 SRAM. Should be able to find some on line. Unfortunately the QUAD is only for the Model 100, it will not fit the 102. Congratulations on your new addition :) From: M100

Re: [M100] 8K RAM Chip

Are you looking to upgrade a 24k unit to 32k? If so, I have the chip you need. Mail me privately for details. On Mar 9, 2018 7:34 PM, "Chris Kmiec" wrote: > Are these available anywhere, or do I have to find a donor system? Just > got a like-new 102, but no memory expansion.