[BennVenn's ElCheapo Lynx SD Flash Cart]

thanks. that feature was missed.

[UPKR depacker added]

16 hours ago, karri said:

Really good compression rate. But slow to depack. For my eyes the exomizer looks best.

That is why I used it in Bad Apple for video packing . That and because I could used stream depacking.

[Looking for good Atari Lynx hardware documentation]

a web copy of the ocred pages you find here:

https://atarilynxdev.net/doku.php/lynx:doc:start

including typos 😛

 

it is missing a bit on the sound system, but the original scan float around

[Game&Lynx - Critter Championship]

OMG. On the other side, sometimes you dont want these pictures online. Just remember the one we took in Tokyo. It looked like some people had a heavy party the night before until the morning.

[Looking for good Atari Lynx hardware documentation]

Schematics yes. Real documentation, no, beside what is written in from the software developer part. but its easy to deduct from the schematics.

[Five Lynx Games are coming to PC via Steam]

Wondering if they obey the emulator code licences 😹

[BennVenn's ElCheapo Lynx SD Flash Cart]

7 hours ago, Igor said:

very cool! the most I ever tried with ComLynx is 2 people

... and that is the reason the game took so long. testing and balancing with >2players is very time intensive if you do not have any large gatherings.

[Handy help]

20 hours ago, atari2600land said:

I downloaded Handy but there's no handy.exe file anywhere. as described in the how to set it up page on AtariAge.

what and where did you download.

[ROM emulator]

uneducated hint for improvement:

• add zener between USB5V - teensy 5V - lynx 5V. that way teensy is always supplied with 5V, but neither will LYNX drive the USB of your PC, nor the PC usb power your lynx (for safety). But make sure GND is common for all and connected
• use 244 instead of 245 for data pins, this saves you the direction.
• for address pins, you can use even simpler chips, as you do not need the "enable" at all, simple i2c level shifters may do
• if you add comlynx, you may want to use also simple chips (e.g. I2C level shifters). dont forget the diode between RX and TX, otherwise you cannot send from Lynx side. suggest not to connect comlynx 5V to the rest beside the comlynx level shifter.

 

[LynxBlast at RGC2022]

So, I can print 6 players capable now on the box

Wonder if I still can manage to test 7 and 8 before roll-out.

[BennVenn's ElCheapo Lynx SD Flash Cart]

sry, this went to the wrong topic by accident ... 🙂

[BennVenn's ElCheapo Lynx SD Flash Cart]

 

 

[LZ4 Depacker]

Just checked my script, you are right. the first two bytes are not packed 😛

I added two zero bytes in front of each binary i wanted to pack.

Long live the documentation :facepalm:

 

 

 

[ROM emulator]

On 10/20/2022 at 9:56 AM, 42bs said:

I wonder, if I want to write from Lynx to i.MXRT, would a second '245 with Vcc = 3V3 (and direction set correctly) be sufficient?

the 244 would do it, too (5V tolerant)

[LZ4 Depacker]

strange. i has been a while since i used it for bad apple video. maybe i added a workaround or used some special command line parameters? Maybe I just forgot.

 

you use "level" as type?

[Troubleshooting Lynx Homebrew PCB]

... which is the reason many 128kb games come as a 256kb rips. because people use 256kb rom cards for pirate copies.

[ROM emulator]

4 hours ago, peekb said:

Doubts about what?

 

As for 5V, according to https://www.pjrc.com/store/teensy41.html and the datasheet, no, hence the HC245s.

I am more afraid of the short between USB 5V and Lynx 5V. USB is supposed to have +-5%, you may burn your pet.

[BennVenn's ElCheapo Lynx SD Flash Cart]

but thats not the one I just bought from you 😛

Will there be a firmware update for the old cards for the new menu?

[LZ4 Depacker]

I always used the one which was (a) working on the lynx (b) fast enough.

And depending on use case, stream depacking vs load-and in place depack.

 

pucrunch was easiest to use for a while and easily integrated into file-loading. now exo is my favorite.

[LZ4 Depacker]

you may want to check:

 

https://github.com/bspruck/exolynx

https://github.com/bspruck/pucrunch

 

for more advanced unpacking codes for lynx.

[Video streaming on Lynx]

On 10/16/2022 at 10:50 AM, marss said:

And how does it work?

Somehow like this?

MOVE screen,ptr
ldy #SCREENSIZE/256
.loop
   lda #0
   stx
.loopx
     jsr ReadByte
      sta ptr,x
      inx
   bne .loop
   inc ptr+1
   dey
bra .loop

 

For BadApple, a bit more complicated as the data is packed as sprites. thus reading and stream unpacking thread plus sprite engine plus music.

I think the source is on github.

[BennVenn's ElCheapo Lynx SD Flash Cart]

3 hours ago, Igor said:

Not at the moment.

too bad. But i love reverse engineering things.

[Video streaming on Lynx]

5 hours ago, kezax said:

ooohhhh !!! you should have presented this at SV party. I remember how people were reacting when seeing again another version of Bad Apple on again another platform, and not knowing anymore how they  should react 😂😂😂. Was quite funny !

 

I have not been at the SV party. And it was release already a while ago.

[BennVenn's ElCheapo Lynx SD Flash Cart]

Is there a documentation for the API of the Cheapo card?

I have the menu source for the RHQ one, but seem no one for Cheapo. Not that source code replaces documentation, haha.

[ROM emulator]

in my understanding yes.

but i used a different schematics for my tests.