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About raster/c.p.u.

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    Chopper Commander

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  • Location
    Czech Republic
  • Interests
    8bit Atari XE/XL, music (synthesizer Yamaha CS2x), sport (bicycle, Karate)

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  1. Hi. You can find number 54 of famous czech 8bit Atari magazine Flop there: flop.atari.org Enjoy it! Greetings, Raster/c.p.u.
  2. Hi all. I want apologize for dirty bug in my educational Intro1k for Forever Dirty Dozen demoparty. Thanks to Fandal, Eru and Fox, who are great pupils and alert me about redundant CLC instruction in dimension-Y part. So, there is corrected version (I hope ) called CI26. It has 1023 bytes. 1024 has original CI28 intro -1 redundant CLC instruction = 1023 bytes Greetings, raster/c.p.u. CI26.XEX
  3. Hi. Hmm, I think it is "standard" DOS II+ behaviour. When I format disk to single (FS#), then there is $02 value in VTOC. If format is medium (FM#), there is $03 value. I check it in all the Flop magazines (28 to 53) and all of them has $03 there (for medium size). Greetz, raster/c.p.u.
  4. Hi. Yes, there is FAT file's ordering trouble as you wrote. SDrive hw can't sorts filenames because it hasn't memory for doing it. Atari SDrive control software could, but it would be very very slow because of reading whole directories (!) every time, no only 1 page (20 filenames). But there is one helpful function Control+F for searching (or Shift+characters). Please read the SDrive manual. Greetings, raster/c.p.u.
  5. Change your program 15 POKE 41018,64:POKE 41019,164 1110 EK=42048 Then your videoram will be from $a440 (42048) with regular 4K boundary at $b000 (45056). (You can run state file in attachments, then break it and list the adjusted source.) hi8.zip
  6. Stackable 4 port version will be more expensive than MultiJoy8, because there would have to be some additional electronic parts and additional two joy connectors for next multijoy. So, I think stackable MJ4 interface is nice and impressive idea, but it's not effective.
  7. Yes, of course. As well as you can read the files or any data from disc images activated in SDrive, you can also copy this files/data to other disc drives by some tools (file copy tools, sector copy tools, etc.). SDrive is one of Atari disc drives alike others.
  8. Please, take care of changes in main R/W operations. We really don't want to meet some disasters with destroyed data. Also I'm a bit afraid of source code lucidity with some special exceptions in main methods...
  9. Hi. We had an experiences that Percom Write command should be confirmed OK always and Error should appears not until following format command. (Are we wrong?) There is used one identical method for blanking as for writing ('faccess_offset'). Clear_atari_sector_buffer_256(); faccess_offset(FILE_ACCESS_WRITE,maz,(u16)psize); IMHO the only way could be bypass the blanking in full, but I don't like such idea at all.
  10. But They also have right to use SDrive. Fire + joy directions are used for another 4 functions. esc, return, < (home), > (end). If the fire button did return directly, there wouldn't be a way to do the other functions.
  11. Of course. I'm not sure if I explain my main reason truly. It's the situation when I (some user) have created some new unique data (music in TMC, picture in graphics editor, etc.) and then I (he) _need_ to write it for sure. There will be too many obstacles: * SDcard LOCK - you can't eject the SDcard and unlock the card (loss of all SDrive drives' settings), that's why SDrive has unlock manual switch. * SDrive write switch disabled - you can enable it manually. * file readonly attribute is set - you can't eject SDcard and permit write to file (loss of all SDrive drives' settings), so there will not be any solution to write data => You have to loss your new created data, sorry. I think you are certain of all read-only file attributes states on all your mediums and all files always. But I'm sorry, I'm not. So, It's my resulting reason for clear and any time manually changeable switch - read-only (always) / read-write (always).
  12. Unfortunately it doesn't solve the problem with manual switching for write enable. Again you have to decide in advance, if you want to write or not to read-only images without possibility to change your choice when you really need it. And it would increase size of control program and configuration again. I don't like this way... I fully understand the advantages of read-only protection, but I think that this feature could cause a lot of troubles for SDrive users (and for me of course ). Now I have the SDrive in read-only mode default (for protection of all data/programs/etc...) and I'm enabling write-enable switch only when I need it.
  13. Thanks. I will test it. Hmm, I'm sorry but I think it isn't useful feature. The reason is in SDrive control philosophy. You haven't any possibility for change "file read only attribute" by SDrive control program not even during your program is running. So, you can use some game/program/tool and if you need to save some unique created state/config/image/music/data, you discover that it can't be stored anyhow. It is the point why SDrive firmware ignore read-only file attribute and it respects manual R/W switch only.
  14. And while you are at it, issue that Poke that kills the loading beep from the computer. Maybe make it configurable for those that like it? Although I dislike idea with a lot of different versions (with/without something) as well as increased size of control program due to extensive configuration, I will thinking about it. But for example control program can't drop the loading beep for booting programs, because it's managed by firmware bootloader. And, by the way, such sounds can be helpful often, you know the loading is in progress really. I will ponder...
  15. Hello. It is DOS II+/D ver.6.4 from Stephan Dorndorf, we like this DOS. Of course, you needn't to use it. You can prepare own SDRIVE.ATR with your favorite DOS, control program SDRIVE.COM (and/or SDRIVEN.COM and/or SDRIVENH.COM) and/or other programs/tools at pleasure.
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