Tempest Posted September 22, 2015 Share Posted September 22, 2015 I'm still in for one when you get it up and running. Quote Link to comment Share on other sites More sharing options...
Reed Solomon Posted November 10, 2015 Share Posted November 10, 2015 also interested in one of these whenever it becomes available. Quote Link to comment Share on other sites More sharing options...
cowdog360 Posted November 10, 2015 Share Posted November 10, 2015 Same here, interested! Quote Link to comment Share on other sites More sharing options...
SainT Posted November 20, 2015 Author Share Posted November 20, 2015 (edited) More updates! Woo! I've just finished off the firmware side of things. You can now... Open a dir for read Read dir entries from open dir Open file for read or write Get size of open file Seek within open file Read from open file Write to open file ** Program the cartridge from an open file (file formats are handled on the Lynx this way, no limitations on specific formats) Switch to low power mode (disable 3v regulator for memory card and shutdown microcontroller when its not going to be used again) ** Only to existing files can be written to and it cannot be expanded beyond its existing size -- limit of petit fatfs. Still useful for high scores / saves etc. The ROM menu I have now saves the current ROM you were looking at to the memory card when you play it, so when you restart the Lynx it returns you to the last played ROM. This is just testing for all the above functions more than anything, but it works a treat. Next I need to go through and test compatibility of everything and sort that issue out, then its done. Edited October 25, 2019 by SainT 12 Quote Link to comment Share on other sites More sharing options...
saffron1 Posted November 20, 2015 Share Posted November 20, 2015 SainT, Awesome, thank you for putting all the time and effort into this, much appreciated. Cheers Quote Link to comment Share on other sites More sharing options...
sd32 Posted November 20, 2015 Share Posted November 20, 2015 Late to the party, but still, very interested! Quote Link to comment Share on other sites More sharing options...
Rave Posted November 20, 2015 Share Posted November 20, 2015 Great news SainT! Can't wait to see it in action :-) Sent from my Nexus 6 using Tapatalk Quote Link to comment Share on other sites More sharing options...
manic23 Posted November 20, 2015 Share Posted November 20, 2015 This is indeed splendid news can't wait to get one of these Quote Link to comment Share on other sites More sharing options...
GadgetUK Posted November 20, 2015 Share Posted November 20, 2015 Brilliant! Amazing progress, you're pretty much there now! Quote Link to comment Share on other sites More sharing options...
SainT Posted November 20, 2015 Author Share Posted November 20, 2015 If anyone has any 1MB ROM images I can test, that would be appreciated. I'm aware there aren't dumps readily available for any 1MB games (like Alpine Games etc), so if anyone could provide me with some for testing it wouldn't go any further. Support is in there for carts which use 512 blocks, but not tested. Quote Link to comment Share on other sites More sharing options...
johannesmutlu Posted November 20, 2015 Share Posted November 20, 2015 Great progress i hope that there will be some redefinements to allow each size of games and save stuff to supported games whatever official games or not. Trough i assume that 95% of games are compatible with it including homebrew games right? If a few games not ever gonne work on it,then i suggest those ones can alway's decide to ebay those games whatever the price of it. Can't wait for the final moment of it. 1 Quote Link to comment Share on other sites More sharing options...
+swlovinist Posted November 20, 2015 Share Posted November 20, 2015 I am interested! Sign me up please Quote Link to comment Share on other sites More sharing options...
SainT Posted November 20, 2015 Author Share Posted November 20, 2015 Ok, sorted the compatibility issues by zero'ing out a few more registers before rebooting -- I think everything works ok now. The only thing left to test is A19 controlled by AUDIN. If someone has a 1mb ROM image to test which uses this, or someone who can knock me up a test ROM, that would be great. Just need to try and make some hardware now. 3 Quote Link to comment Share on other sites More sharing options...
BadPricey Posted November 20, 2015 Share Posted November 20, 2015 Seems like this is awfully close to being done, so I'm also registering an interest now. Great work SainT. Quote Link to comment Share on other sites More sharing options...
Level42 Posted November 21, 2015 Share Posted November 21, 2015 Awesome , interested for sure ! Quote Link to comment Share on other sites More sharing options...
Twoface2 Posted November 23, 2015 Share Posted November 23, 2015 If anyone has any 1MB ROM images I can test, that would be appreciated. I'm aware there aren't dumps readily available for any 1MB games (like Alpine Games etc), so if anyone could provide me with some for testing it wouldn't go any further. Support is in there for carts which use 512 blocks, but not tested. Alpine Games is 512 KB. I think there is a slideshow ROM which uses 1 MB. I'm also interested in your cart! Quote Link to comment Share on other sites More sharing options...
Blitter Posted November 23, 2015 Share Posted November 23, 2015 Count me in. Quote Link to comment Share on other sites More sharing options...
+karri Posted November 23, 2015 Share Posted November 23, 2015 There is no standard way to deal with over 512k carts anyway. So testing this is kind of pointless. I would leave AUDIN alone as it is already used for accessing eeprom based filesystems. Quote Link to comment Share on other sites More sharing options...
CrazyChris Posted November 23, 2015 Share Posted November 23, 2015 I'm interested. Quote Link to comment Share on other sites More sharing options...
7800fan Posted November 23, 2015 Share Posted November 23, 2015 I believe the playable EotB used extra chip, the ram chip and probably won't work on multi-cart or flash cart. Quote Link to comment Share on other sites More sharing options...
SainT Posted November 23, 2015 Author Share Posted November 23, 2015 (edited) On 11/23/2015 at 7:14 PM, karri said: There is no standard way to deal with over 512k carts anyway. So testing this is kind of pointless. I would leave AUDIN alone as it is already used for accessing eeprom based filesystems. A few different carts apparently use the AUDIN pin to do bank switching -- although I think just odd homebrew things by the sounds of it, not any substantial games or anything. Either way, I support this if you want to do it. I'll have to write some test code just to check that it does what it looks like it should. EotB would need to be patched to read / write the save via the memory card if that was wanted. Edited October 25, 2019 by SainT Quote Link to comment Share on other sites More sharing options...
+karri Posted November 24, 2015 Share Posted November 24, 2015 (edited) In some early Atari docs and also in Handy sources there is a way to add a second ROM on one board. No AUDIN needed. Still 1MB. The LNX header looks like this (note bank0 and bank1): ; This header contains data for emulators like Handy and Mednafen ; .import __BLOCKSIZE__ .export __EXEHDR__: absolute = 1 ; ------------------------------------------------------------------------ ; EXE header .segment "EXEHDR" .byte 'L','Y','N','X' ; magic .word __BLOCKSIZE__ ; bank 0 page size .word __BLOCKSIZE__ ; bank 1 page size .word 1 ; version number .asciiz "Cart name " ; 32 bytes cart name .asciiz "Manufacturer " ; 16 bytes manufacturer .byte 0 ; rotation 1=left ; rotation 2=right .byte 0,0,0,0,0 ; spare The bank1 strobe is currently used as a write strobe for many hobby carts. Even EOTB "misused" the bank1 stobe as a write. I have not seen this 2nd bank used. But the emulators support 1MB through this mechanism - not through AUDIN. Writing to eeprom works using address lines. The bank strobes are not used. So imho we should encourage people to use the bank1 for extending ROM in a way compatible with Handy and Mednafen. And save AUDIN for 1-wire interfaces like eeproms, SPI, i2c. Edited November 24, 2015 by karri Quote Link to comment Share on other sites More sharing options...
SainT Posted November 24, 2015 Author Share Posted November 24, 2015 In some early Atari docs and also in Handy sources there is a way to add a second ROM on one board. No AUDIN needed. Still 1MB. The LNX header looks like this (note bank0 and bank1): ; This header contains data for emulators like Handy and Mednafen ; .import __BLOCKSIZE__ .export __EXEHDR__: absolute = 1 ; ------------------------------------------------------------------------ ; EXE header .segment "EXEHDR" .byte 'L','Y','N','X' ; magic .word __BLOCKSIZE__ ; bank 0 page size .word __BLOCKSIZE__ ; bank 1 page size .word 1 ; version number .asciiz "Cart name " ; 32 bytes cart name .asciiz "Manufacturer " ; 16 bytes manufacturer .byte 0 ; rotation 1=left ; rotation 2=right .byte 0,0,0,0,0 ; spare The bank1 strobe is currently used as a write strobe for many hobby carts. Even EOTB "misused" the bank1 stobe as a write. I have not seen this 2nd bank used. But the emulators support 1MB through this mechanism - not through AUDIN. Writing to eeprom works using address lines. The bank strobes are not used. So imho we should encourage people to use the bank1 for extending ROM in a way compatible with Handy and Mednafen. And save AUDIN for 1-wire interfaces like eeproms, SPI, i2c. Yeah, I don't support the CE2 method as I use that for access to the microcontroller on the cartridge. Quote Link to comment Share on other sites More sharing options...
rancidskater Posted November 27, 2015 Share Posted November 27, 2015 Awesome work on this, would love the chance to get one upon release. Keep it up!! Quote Link to comment Share on other sites More sharing options...
bdoi Posted November 27, 2015 Share Posted November 27, 2015 Great news! I m still I'm for one! Quote Link to comment Share on other sites More sharing options...
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