Re: [M100] TPDD service manual

Nope. I think it's Mark J. Blair, aka Stardust on OSHPark, who has posted about these similar boards once or twice here on the list. It doesn't look like it's one of these boards, but a new version that isn't public. The new one uses a through hole db25 mounted flat on the pcb like MounT. And

Re: [M100] TPDD service manual

That is very cool! Do you have a link to the actual project. On Sat, Mar 20, 2021, at 5:25 PM, Brian K. White wrote: > Someone else is just finishing a different approach where he designed a > custom board with everything including the mcu. > >

Re: [M100] TPDD service manual

On 3/20/21 7:56 PM, Darren Clark wrote: I think an Arduino (328P) would have enough horsepower to emulate the TPPD protocol and read/write to a SD card. Could probably even burn the utilities disk image to the 328P and start it up in "utilities" mode to download the disk manager to the 100 or

Re: [M100] TPDD service manual

I think an Arduino (328P) would have enough horsepower to emulate the TPPD protocol and read/write to a SD card. Could probably even burn the utilities disk image to the 328P and start it up in "utilities" mode to download the disk manager to the 100 or 200. On 3/20/21 6:58 AM, Stephen

Re: [M100] TPDD Service Manual

Hello Charles, Stephen,     I would be interested in a TPDD-2 PCB. FYI, the processor would have to be un-soldered from the PCB and soldered to another PCB (break-out board) to address the new external memory and be able to glitch the power, clock, and mode pins. But I would be more than

Re: [M100] TPDD service manual

t; *From:* M100 *On Behalf Of *Brian > White > *Sent:* Saturday, March 20, 2021 8:49 AM > *To:* m...@bitchin100.com > *Subject:* Re: [M100] TPDD service manual > > > > Not that it changes anything, but I thought the problem with the density > difference was that the lower densi

Re: [M100] TPDD service manual

f Birt From: M100 mailto:m100-boun...@lists.bitchin100.com> > On Behalf Of Stephen Adolph Sent: Saturday, March 20, 2021 7:28 AM To: m...@bitchin100.com <mailto:m...@bitchin100.com> Subject: Re: [M100] TPDD service manual not exactly the point I was trying to make. pretty clearly

Re: [M100] TPDD service manual

t; Jeff Birt > > > > *From:* M100 *On Behalf Of *Stephen > Adolph > *Sent:* Saturday, March 20, 2021 7:28 AM > *To:* m...@bitchin100.com > *Subject:* Re: [M100] TPDD service manual > > > > not exactly the point I was trying to make. > > pretty clearly a T

Re: [M100] TPDD service manual

a standard 3.5” 1.44MB drive. Jeff Birt From: M100 On Behalf Of Stephen Adolph Sent: Saturday, March 20, 2021 7:28 AM To: m...@bitchin100.com Subject: Re: [M100] TPDD service manual not exactly the point I was trying to make. pretty clearly a TPDD1 cannot use an HD floppy. but a small

Re: [M100] TPDD service manual

h something that would run on AA batteries and > use standard media at the time even if the storage capacity was limited. > > > > Jeff Birt > > > > > > *From:* M100 *On Behalf Of *Stephen > Adolph > *Sent:* Saturday, March 20, 2021 5:59 AM > *To:* m...@bitchin1

Re: [M100] TPDD service manual

and use standard media at the time even if the storage capacity was limited. Jeff Birt From: M100 On Behalf Of Stephen Adolph Sent: Saturday, March 20, 2021 5:59 AM To: m...@bitchin100.com Subject: Re: [M100] TPDD service manual this is quite interesting, and nice detective work

Re: [M100] TPDD service manual

this is quite interesting, and nice detective work. It would seem like an interesting use case here could be to modify this firmware to make it target a standard 1.44MB floppy disk drive. Maybe it would seem a bit backwards because SD cards are more mainstream, but still interesting to think

Re: [M100] TPDD service manual

I have a tpdd2 board. ;) On Friday, March 19, 2021, Darren Clark wrote: > There are 2 memory modes on that processor, Mode0 which uses the internal > RAM and ROM (which is how the PDD is being used), and Mode 1 which > addresses external memory and masks the internal ROM. The modes are >

Re: [M100] TPDD service manual

There are 2 memory modes on that processor, Mode0 which uses the internal RAM and ROM (which is how the PDD is being used), and Mode 1 which addresses external memory and masks the internal ROM. The modes are selected at startup and can't be switched until the chip is reset. I used an

Re: [M100] TPDD service manual

I wonder if there is a way to boot that processor off of external memory, such that the firmware could be extracted... On Friday, March 19, 2021, Darren Clark wrote: > That is awesome to see! I was hoping it would talk a little more about the > firmware running on the HD63A01, but the

Re: [M100] TPDD service manual

That is awesome to see! I was hoping it would talk a little more about the firmware running on the HD63A01, but the information on the pinout of the gate array chip is interesting and matches up pretty well with what I reverse engineered from the firmware. I'll have to revisit my reverse

Re: [M100] TPDD service manual

I do ... but it would not work for some reason. On Thursday, March 18, 2021, John R. Hogerhuis wrote: > Ok. I thought you had a login since you do the Rex support through the > wiki. > > On Thu, Mar 18, 2021, 5:14 PM Stephen Adolph wrote: > >> John, couldn't make that work..login prevented. >>

Re: [M100] TPDD service manual

Ok. I thought you had a login since you do the Rex support through the wiki. On Thu, Mar 18, 2021, 5:14 PM Stephen Adolph wrote: > John, couldn't make that work..login prevented. > > so I did it brute-force. > https://bitchin100.com/wiki/index.php?title=TPDD_Service_Manual > > > > > On Thu, Mar

Re: [M100] TPDD service manual

That is awesome to see! I was hoping it would talk a little more about the firmware running on the HD63A01, but the information on the pinout of the gate array chip is interesting. I'll have to revisit my reverse engineering of the firmware on the TPDD and see if there is anything to update.

Re: [M100] TPDD service manual

On 3/18/21 8:31 PM, Joshua O'Keefe wrote: On Mar 18, 2021, at 5:13 PM, Stephen Adolph > wrote: so I did it brute-force. https://bitchin100.com/wiki/index.php?title=TPDD_Service_Manual In the

Re: [M100] TPDD service manual

On Mar 18, 2021, at 5:13 PM, Stephen Adolph wrote: > so I did it brute-force. > https://bitchin100.com/wiki/index.php?title=TPDD_Service_Manual > In the interest of preservation and putting our eggs in multiple baskets, I have

Re: [M100] TPDD service manual

Awesome, thanks for sharing. Jeff Birt From: M100 On Behalf Of Stephen Adolph Sent: Thursday, March 18, 2021 7:14 PM To: m...@bitchin100.com Subject: Re: [M100] TPDD service manual John, couldn't make that work..login prevented. so I did it brute-force. https://bitchin100.com

Re: [M100] TPDD service manual

John, couldn't make that work..login prevented. so I did it brute-force. https://bitchin100.com/wiki/index.php?title=TPDD_Service_Manual On Thu, Mar 18, 2021 at 7:43 PM John R. Hogerhuis wrote: > You have to be logged in to upload > >

Re: [M100] TPDD service manual

You have to be logged in to upload http://bitchin100.com/wiki/index.php?title=Special:Upload On Thu, Mar 18, 2021 at 4:15 PM Stephen Adolph wrote: > ah good idea. is there a files area? > > > On Thu, Mar 18, 2021 at 7:06 PM John R. Hogerhuis > wrote: > >> Very cool! >> >> You can upload it

Re: [M100] TPDD service manual

ah good idea. is there a files area? On Thu, Mar 18, 2021 at 7:06 PM John R. Hogerhuis wrote: > Very cool! > > You can upload it to Bitchin100 wiki. The File Uploads feature. > > -- John. > > On Thu, Mar 18, 2021 at 3:56 PM Stephen Adolph > wrote: > >> Via a user on facebook, the TPDD

Re: [M100] TPDD service manual

Very cool! You can upload it to Bitchin100 wiki. The File Uploads feature. -- John. On Thu, Mar 18, 2021 at 3:56 PM Stephen Adolph wrote: > Via a user on facebook, the TPDD service manual has been found! > Who knew we would still be discovering documents in 2021. > > Need to make arrangements