Author Topic: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project  (Read 41686 times)

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Offline DavinD

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #125 on: August 11, 2017, 03:17:57 pm »
There's a new 1000ex on Ebay with the memory expansion and a modem if anyone's looking.
 

Offline DavinD

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #126 on: August 11, 2017, 03:23:08 pm »
Tell me more about the smart watch clock chip.  I've been thinking about adding one to mine.
 

Offline djos

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #127 on: August 11, 2017, 11:08:41 pm »
Tell me more about the smart watch clock chip.  I've been thinking about adding one to mine.

They fit in the HX models just fine but they don't fit in EX's because they are too tall and the Rom is right next to the expansion slot.

They are like a real-time clock but aren't recognised as such, you run the smart watch utility in your autoexec file every boot up to set the computers time and date from it. It goes under a boot rom and uses some clever tricks to work without interfering with the Rom itself. They have small coin batteries embedded in them which hold the time and date.

The batteries are mostly dead now which is another issue.
« Last Edit: August 12, 2017, 02:15:54 am by djos »
The impossible often has a kind of integrity which the merely improbable lacks.

Visit my Tindie store for Tandy 1000 Adapters for EX, HX, SX, SL, TX & TL etc
 

Offline DavinD

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #128 on: August 18, 2017, 05:48:32 pm »
How are things going with this?
 

Offline djos

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #129 on: August 18, 2017, 10:30:08 pm »
How are things going with this?

Just waiting for the PLUS-ISA/R PCB's to arrive from Elecrow - they were sent on the 5th so should arrive any day.

I haven't had any feedback on the "PLUS-ISA Riser Board" for machines without the Ram expansion so I've put that on ice for now. Im also thinking of building 512kb of ram into it so it only needs 2 ISA Slots - I think I've worked out how to do this but havent had the time to update my design.

I've also been designing a Dallas DS1216 clock board for the 1000 EX machines which is compatible with Tandy's "SmartWatch" software. Due to the location of the Bios ROM in the 1000 EX, the Tandy SmartWatch doesnt fit as it blocks the ram expansion board from being properly inserted. Also the SmartWatch batteries are all dying and my design uses replaceable CR1632 Coin-Cells. I'm just waiting on a few parts to test my prototype's physical design before ordering PCB's.
The impossible often has a kind of integrity which the merely improbable lacks.

Visit my Tindie store for Tandy 1000 Adapters for EX, HX, SX, SL, TX & TL etc
 

Offline djos

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #130 on: August 19, 2017, 12:23:38 am »
LOL, went to the post office this morning and my PCB's were there! Excellent!!  :-+



and mechanically everything fits as it should!  8)

Tandy 1000 PLUS-ISA/R Adapter:


Tandy 1000 Printer Port Adapter:


Guess I need to do some soldering this weekend!  :-/O
The impossible often has a kind of integrity which the merely improbable lacks.

Visit my Tindie store for Tandy 1000 Adapters for EX, HX, SX, SL, TX & TL etc
 

Offline bitseeker

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #131 on: August 19, 2017, 07:50:18 am »
Yeah, looks like you've got quite a bit of soldering ahead. :-/O

(Hmm, in addition to a happy oscilloscope smiley, we need a soldering one, too.)
I TEA.
 

Offline djos

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #132 on: August 19, 2017, 10:16:48 am »
Yeah, looks like you've got quite a bit of soldering ahead. :-/O

(Hmm, in addition to a happy oscilloscope smiley, we need a soldering one, too.)

Indeed, I built a few untis this arvo to test and the PLUS-ISA/R Adapters work great - I can finally close the lid on my 1000 EX!  8)

My printer adapter has an issues tho, I must have crossed the streams somehow! :(

Adapters:


Fits perfectly:




Of course ISA adapters have the connectors on the top of the boards and PLUS boards on the bottom of the board - no big deal tho if you put the card with ports in the lower slot.



looks much better now with the lid on.

The impossible often has a kind of integrity which the merely improbable lacks.

Visit my Tindie store for Tandy 1000 Adapters for EX, HX, SX, SL, TX & TL etc
 

Offline DavinD

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #133 on: August 19, 2017, 02:12:00 pm »
This is awesome!  Can't wait.
 

Offline bitseeker

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #134 on: August 19, 2017, 05:53:48 pm »
That ISA adapter turned out great, djos! Now your EX won't feel drafty anymore. ;D
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Offline djos

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #135 on: August 19, 2017, 10:01:45 pm »
This is awesome!  Can't wait.

If you want them faster I can just send you the parts? They are dead easy to build - price is the same because I'm mainly doing this for fun and not covering my time etc.

a set of 2 is $25 USD + $5 USD shipping (inc paypal fees)
or if you only need 1, they are $12.50 USD + $5 USD shipping (inc paypal fees)

Cheers Derek
« Last Edit: August 19, 2017, 10:06:45 pm by djos »
The impossible often has a kind of integrity which the merely improbable lacks.

Visit my Tindie store for Tandy 1000 Adapters for EX, HX, SX, SL, TX & TL etc
 

Offline djos

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #136 on: August 19, 2017, 10:03:43 pm »
That ISA adapter turned out great, djos! Now your EX won't feel drafty anymore. ;D

Cheers, took me quite a few iterations to get it right, but now im really happy with it.  8)
The impossible often has a kind of integrity which the merely improbable lacks.

Visit my Tindie store for Tandy 1000 Adapters for EX, HX, SX, SL, TX & TL etc
 

Offline DavinD

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #137 on: August 20, 2017, 08:29:05 pm »
Adrian (If you're still watching this thread) or others...

Does anyone have a DOS 6.22 DD image?  I only have a 1.44 one.
 

Offline bitseeker

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #138 on: August 20, 2017, 09:49:50 pm »
Davin, you can download 6.22 (as well as other oldies, but goodies) from WinWorld. The images they have for 6.22 are the upgrade version. So, if you want to install it to a hard drive, boot the floppy, then hit F3 to exit setup before you get to the upgrade warning. Fdisk, format, and sys to C: to make it bootable, then run the 6.22 install again to complete the installation.
I TEA.
 

Offline DavinD

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #139 on: August 20, 2017, 10:59:13 pm »
Davin, you can download 6.22 (as well as other oldies, but goodies) from WinWorld. The images they have for 6.22 are the upgrade version. So, if you want to install it to a hard drive, boot the floppy, then hit F3 to exit setup before you get to the upgrade warning. Fdisk, format, and sys to C: to make it bootable, then run the 6.22 install again to complete the installation.

The issue is I needed a 720k images as the Tandy can't read a 1.44HD image.  I ended up using my old 386 and putting a physical 720k disk in it and sysed it.  Then I booted from my external drive and sysed a blank image.  I think I'm good now.  I have the real dos 6.22 images from my MSDN subscription.
 

Offline djos

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #140 on: August 21, 2017, 07:19:19 am »
Apparently PC DOS 7.1 is the best "new" dos version for Tandy 1000's according to the below faq.

http://www.oldskool.org/guides/tvdog/1kfaq.html#III.A.2

I'm running MS DOS 5 atm and have the issue with my external 720k drive wanting to format disks as 360k- I could solve it with drivparm but if PC DOS 7.1 solves this issue I'll likely go with that - it has fat 32 support built in so I can format my microdrive as a single 4 GB partition.

Otherwise it recommends MS DOS 3.30.
« Last Edit: August 21, 2017, 07:22:15 am by djos »
The impossible often has a kind of integrity which the merely improbable lacks.

Visit my Tindie store for Tandy 1000 Adapters for EX, HX, SX, SL, TX & TL etc
 

Offline djos

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #141 on: August 21, 2017, 11:19:50 am »
PS. IBM PC DOS 7.1 can be found here:

https://forums.virtualbox.org/viewtopic.php?f=4&t=80531#p382098

EDIT: updated the link to go direct to the Streamlined process.
« Last Edit: August 22, 2017, 12:59:21 am by djos »
The impossible often has a kind of integrity which the merely improbable lacks.

Visit my Tindie store for Tandy 1000 Adapters for EX, HX, SX, SL, TX & TL etc
 

Offline DavinD

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #142 on: August 21, 2017, 09:03:58 pm »
I'm trying to use 2.5mb floppy images on my Gotek (HXC) drive like Adrian did.  The original Tandy DOS 2.1 doesn't work.  6.22 mostly works.  I'm still having an issue copying come bigger files where I get an ARF error.  I'll have to try out IBM PC DOS.
 

Offline djos

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #143 on: August 21, 2017, 09:37:52 pm »
I'm trying to use 2.5mb floppy images on my Gotek (HXC) drive like Adrian did.  The original Tandy DOS 2.1 doesn't work.  6.22 mostly works.  I'm still having an issue copying come bigger files where I get an ARF error.  I'll have to try out IBM PC DOS.

You could also try using the following in the config.sys file:

DRIVPARM=/D:0 /F:2 /H:2 /S:9 /T:80

(For drive A: - drive B: is /D:1, etc.)

and bump up the number of tracks or sectors DOS supports to match the max number supported by the Gotek 2.5mb format.
The impossible often has a kind of integrity which the merely improbable lacks.

Visit my Tindie store for Tandy 1000 Adapters for EX, HX, SX, SL, TX & TL etc
 

Offline bitseeker

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #144 on: August 21, 2017, 10:44:06 pm »
The issue is I needed a 720k images as the Tandy can't read a 1.44HD image.  I ended up using my old 386 and putting a physical 720k disk in it and sysed it.  Then I booted from my external drive and sysed a blank image.  I think I'm good now.  I have the real dos 6.22 images from my MSDN subscription.

Oh, 720K! For some reason, I thought you were looking for a 5.25" image (older Tandy). Glad you found a way to make it work.
I TEA.
 

Offline DavinD

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Offline djos

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #146 on: August 22, 2017, 09:23:35 pm »
The impossible often has a kind of integrity which the merely improbable lacks.

Visit my Tindie store for Tandy 1000 Adapters for EX, HX, SX, SL, TX & TL etc
 

Offline bitseeker

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Offline djos

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #148 on: August 24, 2017, 03:42:22 am »
There's a new 1000EX on Ebay with the memory card.

http://www.ebay.com/itm/Vintage-Tandy-1000-PC-EX-and-Extra-Drive-/172829026083?hash=item283d69a723:g:9-YAAOSwU2VZmc80

That drive looks like a tape backup.

and it's SCSI too so pretty useless with a 1000 EX that has no HDD to backup and no SCSI controller!
The impossible often has a kind of integrity which the merely improbable lacks.

Visit my Tindie store for Tandy 1000 Adapters for EX, HX, SX, SL, TX & TL etc
 

Offline bitseeker

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Re: Tandy 1000 ex/hx PLUS Expansion to 8-Bit ISA Riser card project
« Reply #149 on: August 24, 2017, 06:43:41 pm »
But with a bus expander, that could be remedied. You want to back up your floppy collection, right? ;D
I TEA.
 


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