Happy Warp 1050 7.1 Schematic

[_The Doctor__]

I think it's been done, there are so many discussions on and off that if it hasn't been, maybe enough is gleaned to twiddle the needed bits so to speak.

 

edit --- looks like you already found some of it

[reifsnyderb]

56 minutes ago, _The Doctor__ said:

I think it's been done, there are so many discussions on and off that if it hasn't been, maybe enough is gleaned to twiddle the needed bits so to speak.

 

edit --- looks like you already found some of it

That's just a snippet @phaeron posted.  I started a disassembly then realized he had snippet of a disassembly, with comments, posted.  That implies there is a complete disassembly, with comments, around. 

[phaeron]

1 hour ago, reifsnyderb said:

Where did you get the firmware disassembly?

Nowhere, it's from my own partial disassembly that I've been working on periodically.

[reifsnyderb]

8 hours ago, phaeron said:

Nowhere, it's from my own partial disassembly that I've been working on periodically.

What ROM version is your partial disassembly from?

[phaeron]

6 hours ago, reifsnyderb said:

What ROM version is your partial disassembly from?

It's from a modified v1 ROM, I need to rebase the disassembly now that we know the correct v1 and v2 ROMs. This code is from common code in the main service loop, however.

[ijor]

Not very important, and probably just for the record. Note that there is no such thing as Happy 7.1 hardware or board revision. 7.1 is a software version, the last known public one. But it is compatible with all Happy 1050 boards and both firmware revisions.

Edited June 19, 2023 by ijor

[reifsnyderb]

26 minutes ago, ijor said:

Not very important, and probably just for the record. Note that there is no such thing as Happy 7.1 hardware or board revision. 7.1 is a software version, the last known public one. But it is compatible with all Happy 1050 boards and both firmware revisions.

Good point.  (Edit to add:  I took the 7.1 version from the "Happy Warp 1050 V7.1 schematic by Jerzy Sobola.)  There appears to be some firmware incompatibility somewhere as the "Happy 3" firmware didn't work with my board.  (https://forums.atariage.com/topic/213804-1050-happy-warp-with-led-display-v3/)  The drive didn't didn't even boot, unfortunately.

 

(I know, there isn't really a R 3 version of the Happy firmware as it's patched.)

 

 

Edited June 19, 2023 by reifsnyderb

[reifsnyderb]

[reifsnyderb]

New boards arrived today.  This board is installed with a socket between the board's pins and the original socket so as to protect it.  Remove the extra socket and the crystal will poke through the board.   (See previous post.)

[reifsnyderb]

Both of my original 1050's are running with either a 6502B and a W65C02.  As those CPU's are faster, I'd rather use a cheaper 6502 and re-claim my better CPU's for something else.  So, I decided to order some.  The CPU's arrived today and the one I tested runs nicely.  As I've seen pictures of other Happy compatible boards running a 6502, there won't be a problem.  My re-creation of the Happy boards has a couple solder jumpers, on the bottom, to select the type of CPU. 

 

I noticed that my MULE disk is showing some wear, so I used a disk copy program with both of my 1050 Happy drives and made a new copy.  

 

 

 

It's amazing how they just wrap these things together to ship them.

 

 

 

 

Edited June 23, 2023 by reifsnyderb

[reifsnyderb]

On 5/21/2023 at 11:17 PM, phaeron said:

 

 

However, I seem to recall that the flip-flops on the controller option board in that schematic are actually swapped. The controller option board affects two memory regions:

• Access to $4000-7FFF toggles the write protect state
• Access to $9800-9FFF or $B800-BFFF clears the write protect flip/flop, and if the switch is set to Slow, sets the 6502's V flag on every other access. (Note that this is the unused 2K of RAM address space in the 6K configuration.)

These address ranges are swapped from the wiring in the schematic, and I seem to recall that this was needed to get the diagnostic tests to pass. But it's been a while.

 

I finally got around to looking into that schematic.  (Mainly because somebody asked me about the controller board.)  What a mess.  Looking at the source code and the schematic, it does appear the flip-flops are swapped in the schematic.

 

Here's my latest address map with some additions...

 

 

 

 

 

 

Edited June 24, 2023 by reifsnyderb

[macsonny]

Can a track display be run from this board?

[reifsnyderb]

1 hour ago, macsonny said:

Can a track display be run from this board?

Not without extra circuitry.  This board is based upon the "Happy Warp 1050 v7.1" schematic by Jerzy Sobola....which doesn't even include an interface for the fast/slow switch and write protect switches.

 

I've started looking into how to add the fast/slow and write protect switches.  However, thus far, I haven't seen a comprehensive map of all of the possible options.  The address map is also a complete mess due to a limitation on the number of chips used to decode addresses.  (I just realized that I am probably missing some mirrors of the hardware addresses, too.)  Most of what I've discovered, thus far, has been from studying schematic diagrams, reading through the Altirra Hardware Reference Manual, and looking at some of the source code.  ( @phaeron has been a great help as well. )  Also, from what I've been told, the track display is only available via a modified ROM.

 

At this point, I am thinking the best option may be a new board with proper address decoding.  I'll add the track display to my "to-do" list and see if it's feasible.

 

 

Edited June 25, 2023 by reifsnyderb

[reifsnyderb]

After looking at the number of chips required to improve the address decoding, I decided to just add the additional 74LS139 for the Happy Control Board decoding.  The factor isn't so much cost as board real-estate and the fact that I'd have to re-design the entire board to add the extra few chips required for tighter decoding.

 

As best as I can tell, a track display was not provided by the original Happy firmware.  I am not sure what utility there would be to have such a display, either. 

 

Here's the section of the schematic with the decoding and connection to the Happy Control Board added:

 

 

I only have the addresses called for in the firmware listed.  There are a load of address mirrors for this configuration and I've figured them out as follows:

 

U8A

/Y1 = A14 & /A15 4000-7FFF

/Y2 = /A14 & A15 8000-BFFF

 

U8B

/Y3 = A11 & A12 9800-9FFF, B800-BFFF

 

 

 

[guus.assmann]

Hello reifsnyderb,

 

The schematics are either from cloned boards or reverse engineerd from a clone board.

If you look at the memory map that is decoded by any of the address decoders, you'll find they all do the same.

And to the best of my knowledge / experience, the track display was a hack by a private person.

The displays are just put on a address in the memory map. (With lots of "shadow" addresses.

In fact, all the "shadows" are a result of incomplete address decoding, based on chip-count.

Either because of cost, or because of board-size.

 

The use of a track-decoder is in analysing disk-protection scemes.

And of course it looks way cool 😃

 

You could use a GAL device to do a decoder that can be changed.

I've once made that design and a board, but never got to make the logic in the GAL.

 

I do own one original Happy board. (Got it as a gift)

And I never got to use it. It arrived "in the middle" of creating the MegaSpeedy1050 boards.

 

Best regards,

Guus Assmann

Edited June 25, 2023 by guus.assmann
Typos and added text.

[reifsnyderb]

2 hours ago, guus.assmann said:

Hello reifsnyderb,

 

The schematics are either from cloned boards or reverse engineerd from a clone board.

If you look at the memory map that is decoded by any of the address decoders, you'll find they all do the same.

And to the best of my knowledge / experience, the track display was a hack by a private person.

Thanks for the confirmation.  I was starting to suspect as much.

 

2 hours ago, guus.assmann said:

The displays are just put on a address in the memory map. (With lots of "shadow" addresses.

In fact, all the "shadows" are a result of incomplete address decoding, based on chip-count.

Either because of cost, or because of board-size.

Makes sense.  It's looking like I'd have to add another 3 or 4 chips to lock in the address decoding.

 

2 hours ago, guus.assmann said:

 

The use of a track-decoder is in analysing disk-protection scemes.

I suppose it would be of some help but it still doesn't isolate the sector.

 

2 hours ago, guus.assmann said:

And of course it looks way cool 😃

🙂

 

2 hours ago, guus.assmann said:

 

You could use a GAL device to do a decoder that can be changed.

I've once made that design and a board, but never got to make the logic in the GAL.

I wouldn't mind doing it this way.  However, some chips are still in short supply so I'd rather not go this route at this time.

 

2 hours ago, guus.assmann said:

 

I do own one original Happy board. (Got it as a gift)

And I never got to use it. It arrived "in the middle" of creating the MegaSpeedy1050 boards.

 

Best regards,

Guus Assmann

 

Thanks!

 

Brian

 

 

[reifsnyderb]

Here's a new board rendering with decoding and a connection for the Happy Control Board.  U8, C8, R2, and J2 were added.  J2 would probably be horizontal pin headers but I didn't want to extend the board out any farther.

 

[+kheller2]

Has no one actually looked at a real happy board? 🤪

[reifsnyderb]

Just now, kheller2 said:

Has no one actually looked at areal happy board? 🤪

Well, I have a tiny little problem.  I don't have an actual happy board.  But I did find these schematics...

 

🙂

 

[+kheller2]

15 hours ago, reifsnyderb said:

Well, I have a tiny little problem.  I don't have an actual happy board.  But I did find these schematics...

 

🙂

 

True. But hi rez pics can get you 70% there.  
 

Since you are in PA, PM me your location and maybe if you are local I can lend you one of the original Happy 1050s I have. (No idea if it works). 

[reifsnyderb]

18 minutes ago, kheller2 said:

True. But hi rez pics can get you 70% there.  
 

Since you are in PA, PM me your location and maybe if you are local I can lend you one of the original Happy 1050s I have. (No idea if it works). 

Do you have the Happy Controller Board, with the switches and LED?  I think that hi-rez pictures of both sides of that board and measurements as to the switch/LED locations, are all that I could use at this time.

 

Best Regards,

 

Brian

 

[+kheller2]

3 hours ago, reifsnyderb said:

Do you have the Happy Controller Board, with the switches and LED?  I think that hi-rez pictures of both sides of that board and measurements as to the switch/LED locations, are all that I could use at this time.

 

Best Regards,

 

Brian

 

I do not have that.    But the thread I linked to does have pics. 

[reifsnyderb]

4 minutes ago, kheller2 said:

I do not have that.    But the thread I linked to does have pics. 

Link?

[+Larry]

He may be referring to this thread:

 

 There was also a guy in the Detroit area (?) that made a replacement controller and other small hardware add-ons.  Can't remember the name at the moment.  But I never actually saw one of those boards.  Edit: Bingo! -- Innovative Concepts, I think.  And I think the board was called the "Imitation Controller."

[+DrVenkman]

8 minutes ago, Larry said:

There was also a guy in the Detroit area (?) that made a replacement controller and other small hardware add-ons.  Can't remember the name at the moment.  But I never actually saw one of those boards.  Edit: Bingo! -- Innovative Products, I think.

 

Of course, in the last 10 - 15 years (maybe longer?) Steve Tucker (“Atarimax”) has made repro Happy 1050 boards too; I have two of them for my only two 1050 drives. I have no idea how much the board design differs from the originals.