jarrodparkes

Hey everyone, I'm selling an Atari Lynx II collection for $628 USD: Atari Lynx II - $150 Original Box AC Adapter Sun Visor/Screen Guard Pouch CIB Games (27) - $452 A.P.B. - $17 Bill & Ted’s Excellent Adventure - $11 Block Out - $16 Chip's Challenge - $12 Crystal Mines 2 - $12 Hydra - $12 Ishido: The Way of the Stones - $11 Jimmy Conners Tennis - $9 Joust - $40 Klax - $12 Kung Food - $10 Ms. Pac-Man - $31 Ninja Gaiden III: Ancient Ship of Doom - $36 Power Factor - $7 QIX - $20 Roadblasters - $28 Robo-Squash - $9 Rygar - $27 S.T.U.N. Runner - $13 Scrapyard Dog - $17 Shadow of the Beast - $19 Steel Talons - $12 Super Skweek - $9 Todd's Adventure in Slime World - $15 Toki - $24 Viking Child - $16 Xybots - $7 Loose Games (2) - $26 Gauntlet - $16 Pinball Jam- $10 The system and games work great and each CIB game has its own protective plastic case (included for free!). The prices come from PriceCharting.com as of 03/14/2020, and I've listed them individually just so you know how I came up with the final number. I'll pay the shipping costs to anywhere in the continental US. PayPal is preferred, and all prices are listed in USD.

So I have an Atari 2600 4-switch wood grain which I am currently developing homebrew code for. I am obviously invested in keeping my Atari clean and well-functioning for the long haul so that I can continue to test my homebrew on real hardware. With that said, the power adapter I have for the console is not original. It is a generic power supply from China that reads the following: "AC Adapter, Input: 100-245 VAC 50/60 HZ, Output: DC9V - 500mA". The coord works, it powers the system; however, I am not a fan of using this power supply that did not come with the system. I worry that it could eventually damage the board, etc. I have seen links for an "Atari 2600 Deluxe Power Cord" that was made in Europe (Italy? i think), but I am not sure they are still in stock. Anyways, I would like to get a better/safer power supply. Any suggestions?

Yes per line.

@QuadRunner do you know if there is a limit on how many values you can list with these directives (dc.b, hex, .byte)?

I think I may have figured this out. I believe there is a limit of how many values you can list using a "dc" directive. Instead of dc.b and then listing 192 bytes, I have broken them into rows of 16 bytes each.

Does the DASM directive dc.b add extra padding? I have been able to get asymmetric playfields working fine when using the .byte {constant} approach (which is what the FSB tool generates). But when I try to use dc.b and then list out 192 bytes (once for each of the 6 columns) the playfields are in some unknown state. Example 1 (working): .byte 0 .byte 0 .byte 0 .byte 0 Example 2 (not working): dc.b $00, $00, $00, $00, ...

Another related question. Since the Atari program ROM uses the memory located at $1000 - $1FFF, is it alright to set the origin at "ORG $1000" instead of "ORG $F000" <--which is used in the tutorials? If I understand correctly, they reference the same data because $F000 - $FFFF mirrors what is contained at $1000 - $1FFF? Is there a particular reason that "ORG $F000" is used in the source code? Thanks @SpiceWare - By the way, I checked out your SpiceWare site, awesome stuff!

Right, that all makes sense. I have a good grasp on how a stack works, zero page, etc. and your explanation helps a bunch (I have done a little NES assembly before). I guess my confusion lies in how I have seen the memory be laid out for the NES. In the NES, there is a separate page dedicated to stack memory (RAM), and then another page dedicated to general purpose RAM (see here http://en.wikibooks.org/wiki/NES_Programming). But long story short, the Atari 2600's stack memory and general RAM share the same 128 bytes ($0080 - $00FF which is mirrored at $0180 - $01FF)?

let me know if i understand this correctly, but when you use the term stack you are only referring to the locations $0080 - $00FF? the stack is only 128 bytes, correct?