mutil8

I would recommend the atari assembler (book) if you are just starting out in atari 6502 assembly. it is a little short on atari specific examples (lacking much on display lists, i/o, etc but it is a good starting point. the sound tone generation examples toward the end are great for getting a little interaction w your atari. Atari Roots is another good book, and contains more atari specific examples. PDFs are available for almost any book - you can print them out for reference, some are available on ebay.

Zolaeria - would you you be willing to start a seperate thread providing details of this and answering questions? I certainly can see advantages to banking off the OS and replacing it with a few needed routines. Not having a lot of knowledge of atari hardware would make this a real struggle for me (and maybe others). In any event I think its a very useful and challenging subject/technique.

still looking

Looking for more books for my collection: Atari Roots Assembly language programming for the Atari computers Atari graphics and arcade game design Atari assembly language programmers guide Computes 2nd book of atari graphics 6502 assembly language programming Programming the 6502

for me no question - Ultima series. played more on apple ii but some on atari. many of the games mentioned here I have played, but max interest for an hr or so. I could (and did) play ultima for days on end.

ok the monk looks really good. smooth scrolling which I wasnt sure was possible. I took a look at a video of it on youtube. looks like entire screen is mode 10? Is there any vbi to change colors? mode 10 appealed the most to me in the quick experiments I did due to control over colors. Pixels appear much longer horizontally which is a strange design.

ok took a quick look at koronis. looks like top and bottom of play screen are mode 10, allowing more colors. I am interested in creating an extremely simple demo in assembly in gtia mode 10.

In my quest to relearn 6502 assembly (been decades) and learn ATARI specifics (I was mainly on Apple II back in the day) I have come across GTIA graphics mode 10 and 11. Doing some simple experimenting I was able to get 9 colors (including background) in mode 10. 15 or so in mode 11 but unable to change colors. These modes appear to be very rarely used, especially in games. Is this due to increased use of memory, speed issues updating screen, etc? I would be interested in any games that use either of these modes, hopefully accessable via fujinet, or demos. Also any simple code that utilizes these 2 modes.

XLs and XEs came with basic in ROM. 400 and 800 used a basic cartridge. there was this package: which I believe was an 800 w basic cart and manual. Personally I wouldnt worry too much about including the cart or not. tested and working,pictures, all cords and power supply, is more important.

taking another look at the program in question - $F6A4 EOUTCH. Mapping the atari describes this as a vector and should (?) work on all 8 bit comps. Another forum post I read indicated otherwise. Should simply loading a value into A reg and JSR #F6A4 display a character? ran a simple test on this, no output to screen that I could see. found some info in Atari Roots that may clarify this for me. Its weird how many simple things are actually complicated on the atari compared to apple ii.

lol yes book doesnt seem the best. tried to get parts of it working via mac/65 and indeed calling routines in OS didnt seem to work correctly. stumbled across the book new and it was inexpensive. Guess you get what you pay for. I would be interested in anyones experience with the programs or book itself.

the reason to copy to physical disk is to utilize the program and files w mac/65 assembler created programs. mac/65 conflicts with a lot of hardware/dos etc.

downloaded and unzipped - dont see any .exe file in any folder

downloaded CP210x_Universal_Windows_DriverCP210x_Universal_Windows_Driver, wasnt able to install driver

ok I took these steps, - w .atr file in fuji d2 and a formated disk in d1 (1050) then tried J duplicate disk from dos 2.5 menu. it seemed to try work - heard the fuji over monitor audi but resulted in error 138 which is device timeout. maybe the dos 2.5 duplicate isnt up to the job?