Jump to content


  • Content Count

  • Joined

  • Last visited

Community Reputation

493 Excellent

About ParanoidLittleMan

  • Rank

Recent Profile Visitors

12,898 profile views
  1. First thing: in case of ST video modes you have bitmap data, what is exactly 32000 bytes, for all 3 resolutions. Then have palette. It is 16x2 bytes for low res, 4x2 bytes for medium res, and 1 bit for high res . But normally it is always 32 bytes. Recommended is to use some common Atari ST picture file format. Mist popular is Degas PIX - PI1, PI2, PI3 . 32034 bytes. First word is resolution, then 32 bytes for palette, and rest is bitmap data as is in RAM . Yes, I wrote this, but really, all it is online and would be better to perform some search online before asking about basic facts about some popular computer. Emulator you need is Steem Debugger. You can dump memory sections and even color palette with it. Instructions ? You will figure out it in 5 minutes. GUI rulez ! 🙂 And you need to read some DOCs about Atari ST HW - like where the video RAM starts, system variables.
  2. You don't need to use Gimp for making Atari ST screens. You can use your favorite paint program on PC, and surely on MAC (what I don't use and don't know it's SW). I use Paintshop Pro 9 for Windows. That's latest version before Adobe took it over. But Photoshop is fine too. The most important part is to set screen to 320x200 resolution, and 16 colors. But may start with more colors, and reducing to 16 when editing is done. Especially as some operations work only in 16M color mode. Saving it as uncompressed BMP will result in file long exactly 32118 bytes . And that can be converted without any loss to PI1 format - 32034 bytes. Paintshop Pro supports saving and using custom palettes. Photoshop too.
  3. I don't think that 'new rom' can solve problem like this. Must be some silly bug in Forem ST. I may have a look in this, and just DL-ed your files. But you don't have good disassembly, and even ZIP file name is wrong. Instead Steem need to use MONS for instance, or some SW for PC. Generating proper S source file, with labels and data with proper size is really time consuming process. Will need days, weeks to make it flawless. I can try to fix executable. That goes faster normally. Surely not so soon ... Fix would be to write them bug report.
  4. Surely is best to use autodetect. That's how it is done in some games, and I used it in case of Giana Sisters with scroll when blitter is present. Unfortunately blitter is not much used in Atari ST(E) games, even if it appeared in 1987. So, could say that was not much popular among coders. Maybe there were no really good docs available in those early years ?
  5. Absolutely superb game. May take little time to get used on control system, but that's what is realistic movement. Can find even hints for missions around. http://atari.8bitchip.info/SCRSH/warhs.html
  6. Checked on post office. Calculating with weight of 1.5 kg it is about 28 Euros - standard shipping to destination with delivery confirmation.
  7. Prices: Viking: 20 Euros, Fujitsu: 30 Eu. Modded adapter: 20 Eu . All 3 together 60 Eu + Shipping . I forgot to add: Plextor SCSI CD writer 12/4/32 .
  8. Quantum Viking 4.5 GB with 68 pin SCSI conn. Quantum Atlas 10 GB with 68 pin SCSI conn. Fujitsu FW 10108 18 GB with 68 pin SCSI conn. - 10 RPM, very fast . Viking and Fujitsu work well with Ataris via ICD adapter, or in Mega STE with it's internal adapter - for accessing more than 1 GB need mod: http://atari.8bitchip.info/modmste1.html For sale too: Mega STE internal ACSI adapters - 1 original, 1 modded . PCI SCSI controllers for PC - good for data transfer, for instance: Symbios Logic , Adaptec, Rocket 91000UW . All 3 have 3 SCSI connectors - 50 pin, 68 pin and as external: micro DB68 . Have some SCSI cables too. All listed is in working condition.
  9. That's called graphic modes, chipset in case of Amiga. About gr. capabilities of TT, Falcon: use search, google, Wiki. Forums are not place for such questions. You could get some answers in 10 secs.
  10. I made in past expansion with 30 pin SIMMs for Atari ST . Without board. It was just direct soldering of SIMMs to proper locations. And as I see this is the plan here too . So, if you want I can write you detailed connection plan - to say so. For now the principle: Surely must first deactivate existing RAM. That means to connect all involved RAS and CAS lines to +5V . Of course not part what leads to MMU chip, but what leads to RAM chips - there are 68 ohm resistors between. Connections: you have 4 modules with 8-8-8-8 data lines. There are 2 16 bit banks, what Atari ST MMU chip can control, access . Each bank has 3 control lines - CAS0H, CAS0L, RAS0 and CAS1H, CAS1L, RAS1 . All address lines and write line go parallel to all RAM chips - in this case modules. You need to connect 16 data lines to data lines of modules. That needs some care. There are Low and High data lines (bits in fact), and they need to be connected to modules like: 8 High data lines (D8-D15) to module what gets CAS0H and to module what gets CAS1H . 8 Low data lines (D0-D7) to module what gets CAS0L and to module what gets CAS1L . RAS0 goes to modules where go CAS0H and CAS0L - that would be bank 0 . RAS1 goes to modules where go CAS1H and CAS1L - that would be bank 1 . So much for now.
  11. Better photo would help a lot - better said couple photos from different angles, with more zoom.
  12. Just to add that tested on Mega ST with TOS 1.04 UK and De, and was good too .
  13. No. 28 pin EPROMs are pin compatible with mask ROMs. And I ship double capacity 27C512 - what goes straight in sockets, and then upper half is active. Here are details and photo: http://atari.8bitchip.info/tosimav.html That's Mega ST, but it is same for all STs, even for old boards without that 74LS11 - what is only for 2 chip version support. Pinouts for higher capacity differ - so at 1 Mbit EPROMs like 27C1001 , but not only that, pin count is different too. So, 27C1001 is 32 pin, and that makes using them harder in STs .
  14. Cyg/BlaBla made self Windows converter program, what converts BMP 16M colors format to hi-color Atari format. I worked little together with him on that. I think that he is who made best dithering in converter SW . Diverse parameters are adjustable in converter.
  15. This prices at ebay are insane . 39.95 $ for "new" 2 chip TOS 1.04 (that's correct #) ? And of course not new chips - nobody makes them for over 25 years. And even more insane is shipping price to Eu - 38.70 $ . Here is my offer: TOS 1.04 original and tested in 2 chips, only that it is UK version. Price including delivery to USA 36 $ . And I can ship EPROMs programmed with whatever you want, and I'm behind TOS 1.04i .
  • Create New...