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Everything posted by Grevle
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Assembler clear return stack / return info
Grevle replied to Grevle's topic in Atari 5200 / 8-bit Programming
Thanks, How to trace my assembler program ? im not so familiar with the Altirra debugger. Or is there some other way of tracing the assembler program ? other way than using Altirra ? -
Assembler clear return stack / return info
Grevle replied to Grevle's topic in Atari 5200 / 8-bit Programming
Thank you, well i think some of my basic programming habits follows me into assembler, heh. -
Assembler clear return stack / return info
Grevle replied to Grevle's topic in Atari 5200 / 8-bit Programming
Yes ofcoarse is best to have the control of the subrotuines, this is meant only for rare special occasions and/or for debugging. Thank you. -
Assembler clear return stack / return info
Grevle replied to Grevle's topic in Atari 5200 / 8-bit Programming
Thank you, I didn,t mean to read the adress, But to clear the adress on the stack, as in clear memory, remove the return adress completely, Or to put it this way, I want my program to behave like there never was given a JSR, ofcoarse is only to be used at a certain place in the program. is it as easy as a CLC command ? -
It seems maybe my program sometimes can get lost in subroutines or some misdirected BEQ BNE or BCC BCS linked to RTS with may work if the programmer know where that RTS will return to and it flows naturally in a loop that way.. The RTS will return to the previous JSR, isn that right ? Anyway, is there a easy way of clearing the Return info, its on the stack ? So that all Return adresses are clear , So that the programmer can get control again of the Adresses in the subrotuine. I know that RTS is normally linked to JSR. I should know this by now, but it seems my way of learning assembler is kinda unorganized hehe.
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Thats Amazing. Actually it look somewhat similar to the shelfes in a Atari store i was visiting back in 1983.
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XEGS/XEGM - good choice as a full system? expandable memory?
Grevle replied to scottinNH's topic in Atari 8-Bit Computers
Strangely enough here in Norway the Atari XEGS is what most often pop uf for sale for the Atari 8-bIt line, i seen many og these sell here, most of them with the lightgun and a few games, all of these are PAL systems ofocoarse, i have 2 pal motherboards, 3 Ntsc one with s-video mod. -
im using Atasm, hmm i think i used number between letter some other places, like the player equates p0x, p1x, p2x, p3x.. player X postionregisters and it seem to work normal. The error probably is somwhere else. the code is getting quite complicated, for me anyway.
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Well i changed the display back to first username i used here on Atariage. I seems no one was latching on to the new names i was trying. Hehe.
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Preppie!, Preppie 2, Sea Dragon source code!
Grevle replied to Savetz's topic in Atari 5200 / 8-bit Programming
Great. Sea Dragon perhaps would be nicer with a litte more bright colors ? i seen the video of C64 version that on has brighter colors. -
well i had so many tries and diffent versions and test runs so the code all a mess, it also involves returns to the vbi since its a player movement routine. but i i fixed my program using a different metode by using some instances of the dex command.
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I had some problems with the inc and dec instrucions. when i had one instance of incrementing a variable (PX) inc px the loop worked and then was trying to use one more variable (P2X) inc p2x. this was in the same loop but that didnt work, i tried many different ways of using both variables but ,still it would now work, So i had to use some other metode that didnt use two insances of the inc command , and that worked right away so this lead me to think that the inc and dec instructions have some limitations, does it have something to do with the accumulator ?
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That is so cool. I realy would want something like that in my Home. Put my Atari computers and a Crt Monitor or Tv in it. Coolest thing ever.
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Well i liked the first sound better, and second one yes i agree to mutch pure tone, any chance of some more work on this sound ? Thanks.
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Omg what a suprise . A real classic sequel to Star Raiders. So almost Complete ? whats missing ? Ok i've read the document. So the author wanted to add more enemy ships and improve AI.
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Emulation is great. But theres just something about the real hardware when using CRT display. For gaming joystick inpout response is on real hardware is spot on obvious. I emulation its several layers to go trough for joystic response, First the Emulation itself then trough Direct 3d or similar that creates a little lag. the trough USB interface and trough theUSB Drivers or similar that creates a little more lag. It just the look of real CRT scanlines also, its just feels right and then the look and feel of a Real Atari Hardware. Also keyboard input response is spot on on real Hardware. And also PAL emulation running 50hz is a problem to get perfect video sync because 60hz is the standard for most pc monitors. For me thats not only about gaming but the whole retro experience comes together on real hardware. Ofcoarse nowadays with all the great hardware like SIO2SD and THE CART and so on its a bit cheeting when using real hardware. Not exactly how is use to be but still Real hardware most autenthic. Emulation is great ofcoarse and the way to go if one don't have or want the real Hardware. Great tool for programming and testing and running programs. And if all the Atari hardware is defunct sometime in the distant future then emulation is a nice way of using the old hardware. FPGA Atari emulation is also great, This feels more like the real hardware. no direct 3d and Windows Usb drivers to go trough here. I been testing this and is the closest feel you can have to real hardware, it can even run in 15KHZ mode for CRT TV, displays.
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Yes Agree !. Atari Galaxian looks very nice, But the sound effects doesnt do it justice.
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Som years ago i hacked the nes game Galaxian. Changed the colors so that it try to match the arcade version. The nes galaxian had green colors witch looks strange. I never owned any Nes hardware but, but sometimes been using emulators to play some of the games. Since i never shared the file yet I posted the file over at Classic gaming/General forums here at Atariage.
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Some years ago i hacked the Nes game Galaxian and changed the colors so that it try to match the colors of the Arcade version . The orginal nes version have green galaxians i think witch seem a little strange. I never shared this hack, but il put it up here if anyone is interested. Galaxian (Arcade Color Hack).zip
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Well ofcoarse when he is one color you migth see trough omly the pixels that makes up color 0 for drawing eyes etc, but in the image above the it seems backround is visible trough the color pixel also with doesnt seem right, the backround trough the upper parts of Popeye's head.
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V9 Concept should work i think. But why is it possible to see trough Popeye when he is one color. That surely shouldnt happen ? or is it a priority issue ?
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Which Atari 8-bit game makes you laugh the most?
Grevle replied to Fletch's topic in Atari 8-Bit Computers
And Alleycat is funny even tough i havent played it mutch. The cat have som awesome moves and funny jumps Tapper also is kinda funny i think. keep feeding the customets beer and keep the glasses from falling to the ground. -
Which Atari 8-bit game makes you laugh the most?
Grevle replied to Fletch's topic in Atari 8-Bit Computers
For those that dont know Salmon Run. Press joystick back and hold button to dive the salmon, its neccesary to avoid the bear and the seagulls. -
Which Atari 8-bit game makes you laugh the most?
Grevle replied to Fletch's topic in Atari 8-Bit Computers
Salmon Run With i had back in the 80,s on tape. The Black bear is pretty funny. if you dive your salmon to shortly the Bear is quick to catch up with you.Theres even a a white ice bear on later levels. And also when your salmon got caught in the fishermans net. The Seagulls flying overhead has a pretty funny sound, and also when you caught by the seagulls. When you manage to complete one level, The kiss with the other fish and the kissing sound is pretty cool and funny and then the hearts that surrounds the two fishes after the kiss. Yeah some good memories with this game
