HP97 The journey begins

[teenix]

Hi all,

Just taking advantage of one of the new program steps working on the Woodstock board with the HP-29 running.

https://teenix.org/msg29c.mp4

cheers

Tony

[teenix]

Hi all,

Almost there, just have to check the battery charger. The LED display will give an indication when the battery is being charged.

Edit.

Just added an image showing the USB cable connected which is running the calculator and charging the battery. Charge indication is the mantissa sign digit, segment D lit.

cheers

Tony

[zixingcheche]

Hi Tony

it is good news!
one question about the battery, Can I use AA size battery x2 in original battery case of wookstock (V1.2 DC x2) ?

Thanks!

[teenix]

(03-20-2024 09:33 AM)zixingcheche Wrote:  one question about the battery, Can I use AA size battery x2 in original battery case of wookstock (V1.2 DC x2) ?

The cpu board does not use a step up voltage circuit. It was designed for the small LiPo battery which outputs around 4V, 800mAh, model No. 802540.

cheers

Tony

[zixingcheche]

Understood. It is same as spice CPU, right?

[teenix]

(03-20-2024 11:09 AM)zixingcheche Wrote:  Understood. It is same as spice CPU, right?

Yes, pretty much the same.

[teenix]

Hi all,

A bit of a mishap. I manage to accidently short the circuit board while fiddling with it and got a few puffs of smoke and a dead board. I rebuilt a new one and while fiddling some more, the board stopped responding to the communications channel. Then it worked, but the re-flash failed. It is a bit frustrating trying to figure out the problem, new board, bad part, solder joint, software bug etc etc.

After some more fiddling, it turned out the battery was discharged enough to get the processor to reset occasionally. What threw me was the display was still working. Then I thought: why wasn't the low battery indicator working. It was just a tweak of the programmable reference setting.

Anyway, the battery was put on charge and it now works. The charge LED shows through the main display window.

I added a printer interface to the 29C model which sends print data to the PC via Bluetooth and the CalCom program will print the info using the original printer font style similar to the 19C. You can also print a hard copy as well.

The attached image shows Dave Eatons USB cable plugged into the Woodstock charger port and the print output of a small running program.

Hopefully just some final testing then done.

cheers

Tony

[teenix]

Reassembled Woodstock battery pack with LiPo installed.

[tangdfx]

Good news.

Is it possible to add spice series ROM?

The key number is the same and just add an overlay.

[teenix]

(04-07-2024 02:03 PM)tangdfx Wrote:  Good news.

Is it possible to add spice series ROM?

The key number is the same and just add an overlay.

Not enough memory unfortunately.

[teenix]

Hmmm, no smoke lately, might be finished :-)

Greeting screen if it works ok when first assembled.

cheers

Tony

[teenix]

Hi all,

I added a Black Jack (aka 21) game to the Woodstock CPU board. It might while away an hour or two of otherwise boredom. Pesky processor thinks it can win all the time, but it can't :-)

I have just put it back on charge after 2 weeks of almost daily development time.

cheers

Tony

[Mike T.]

(04-08-2024 12:14 AM)teenix Wrote:  Hmmm, no smoke lately, might be finished :-)

Wow !!

[teenix]

Hi all,

I got a game similar to Tetris going on the Woodstock board too.

It's probably the first time ever that a Woodstock has played the Tetris tune :-)

It's a bit squeaky because of the tiny Piezo transducer but the notes and timing are correct, and of course, it can be turned off.

cheers

Tony

[rprosperi]

If you're going to have Woodstock sounds, I'm afraid you'll have to have it play "Foxy Lady" like Hendrix did at Woodstock. It's just a must do...

[Massimo Gnerucci]

(04-21-2024 12:03 PM)rprosperi Wrote:  If you're going to have Woodstock sounds, I'm afraid you'll have to have it play "Foxy Lady" like Hendrix did at Woodstock. It's just a must do...

[teenix]

(04-21-2024 12:03 PM)rprosperi Wrote:  If you're going to have Woodstock sounds, I'm afraid you'll have to have it play "Foxy Lady" like Hendrix did at Woodstock. It's just a must do...

That'd be cool, but I don't think the little peeper of a sound generator would do it justice, probably like Hendrix on a ukulele :-)

[rprosperi]

(04-22-2024 12:19 AM)teenix Wrote:  

(04-21-2024 12:03 PM)rprosperi Wrote:  If you're going to have Woodstock sounds, I'm afraid you'll have to have it play "Foxy Lady" like Hendrix did at Woodstock. It's just a must do...

That'd be cool, but I don't think the little peeper of a sound generator would do it justice, probably like Hendrix on a ukulele :-)

A steep hill to be sure, I'll assume the folks making the sound generator never imagined such a challenge. As for music, I'd probably prefer Hendrix on a ukulele over much of today's music. Gotta run, I need to go tell some kids to get off my lawn...

[teenix]

Hi all,

It looks like the Woodstock is finally done, except for bugs no doubt ;-).

Here are its features...

Supported models HP-21, HP-22, HP-25C, HP-27, HP-29C
Continuous Memory storage for all models - requires no battery power
Storage: HP-25C, 207 program files. HP29C, 360 files, either program or data
Continuous memory has reset
Bluetooth connectivity
Internal USB battery charger with charge indicator, can run calculator as well
LiPo battery powered
Selectable low battery reference
Constant current LED driver
Text editor for creating names for stored programs
Turbo Mode, fast code execution
Decimal/Binary/Hex/Octal convertor
Option to display program text instead of original key numbers
Real time clock with alarm, +/- 5 PPM
Separate count up and count down timers with alarm
Selectable DDMMYY, MMDDYY, YYMMDD or Text date format
Clock display in numeric or text format - 5 Past 3, 29 to 11, Noon, etc
Menu activated right switch (in case user's model does not have one)
Selectable key de-bounce
Beeper - selectable Off, Loud or Soft
Display setting – Bright or Dim
29C printer interface via Bluetooth link to PC - NRM or TRC modes, font is same as 97
Power on model display
Temperature display
Version display

3 extra programmable functions for the HP-25C
-Beep
-GSB 49
- RTN
6 extra programmable functions for the HP-29C
-Random Number
-Constants
-Beep
-Data Swap
-File access - load programs or load/save data files (similar to 67/97)
- Notes Display

PC interface for transferring options and programs
Compatible with Teenix Woodstock emulator
Reprogrammable via Bluetooth, USB Serial Port Module or PIC ICSP programmer

2 inbuilt games, Tetris and 21 with music and sound effects

I'll try to get it on the web page in the next day or so.

cheers

Tony

[rprosperi]

WOW!!

I've been following this thru its gestation, but honestly missed or forgotten some of the features, or some smaller details of features, but this is quite amazing, Tony, very well done!!

A couple questions:

A. Why does the 25C support fewer program files than the 29C? Given the same platform, one would think they could support the same. Unless simply because the 25C was less capable than a 29C and that's how things must be, which I could understand and support.

B. Can the original power adapter be used to charge the LiPo battery and operate the device?

C. Does the new battery fit in an original, or 3D printed equivalent, battery pac?

D. Purpose of new GSB 49 instruction?

E. It appears installation consists of simply opening the unit, replacing the old board with the new one, and reassembling, is that correct?

Looking forward to one of these...