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INTERNAL MyIDE: BIOS 4.3 (all-XL, XE, XEGS) UPDATE 29jul2010 https://www.atarimax.com/flashcart/forum/viewtopic.php?f=7&t=358 |
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Author: | mr-atari [ Wed Jan 18, 2006 12:50 pm ] |
Post subject: | INTERNAL MyIDE: BIOS 4.3 (all-XL, XE, XEGS) UPDATE 29jul2010 |
Please read the manuals found here: http://www.atarimax.com/flashcart/forum ... .php?t=490 Final 4.3I/E-OS with build-in Fdisk2. (E=External MyIDE, I=Internal MyIDE) Replacement BIOS for inside your Atari! (NOT for flashing your MyIDE+1Mbflash cartridge) XL/XE uses 16k Eprom [27c128]. 600XL uses 16k Eprom [27c128] (use the modded OS for this 16k machine!). XEGS uses 32k Eprom [27c256]. 1200XL (set jumpers from ROM to EPROM) uses two 8k Eproms [27c64] To reflash your internal-kit, use the flashmaker and the myide.rom file. It's a small PC-programm that creates a EXE that re-flashes your internal MyIDE-BIOS http://www.atarimax.com/myide_old/docum ... nstall.zip The created EXE file can be loaded with APE from your mirror-drive. It will not load from a ATR that has DOS on it. If you can not burn EPROM's or get them burned, I do it for you. You get it at flatrate (no profits) for 15 euro including postage worldwide. Drop me a email on my homepage: http://www.mr-atari.com or here at the forum. Highlights of the 4.3I-OS, 4.3E-OS (Addition to the 3.1 Manual): -"Build-in FDISK v2" -"Improved compatibility (new powerup/reset routine)" -"reset-topics (new keystrokes)" -"Brand new image loading routine (new layout, easy to use)" -"DD support for images" -"Removed copy-bug between partitions!" -"Logical drive limitation to 3 drives" -"400/800-software support" -"Downwards compatible with other MyIDE-partitions" -"OS-Identification Byte" -"Inverted OPTION-key for BASIC" What is new? -type "BYE" to access FDISK (or run at address: E471) -Extended vector table. -Coldstarting the OS keeps MyIDE-setting save. -Fully compatible with 'standard' XL/XE-software. -RESET-topics. Added keystrokes for reset. -Hold OPTION during COLDSTART to enable BASIC. -Hold SELECT during any reset to completely restart. (MyIDE-setting and Basic). -Boot up drive Dx: activated (set with fdisk) -Start image-loading activated (set with fdisk) -Patched NMI-routine for 400/800-software. Added keystrokes: shift+control+tab : Re-boot Atari (except MyIDE-settings and Basic!) shift+control+esc : Normal RESET. shift+control+R : Clear and (try to) reload Configuration bytes. shift+control+D : Disable Hard Disk shift+control+E : Enable Hard Disk shift+control+P : Protect (read only) Hard Disk shift+control+U : Unprotect (read and write) Hard Disk shift+control+A : Toggle On-screen Activity (Colors in border) These additional keystrokes are available when booted from an ATR in the image partition. shift+control+# : Mount Image No #. #=number 1....9. Example #=2 to access disk 2. Images must be insequence on the MyIDE. Configuration bytes (default on reload=all $00): -03F9 = Image-density. 0=128 bytes/s 1= 256 bytes/sector. -03FB = HDPRES -03FC = BITS -03FD = OPTION-BYTE -03FE = IMAGE LOW-BYTE -03FF = IMAGE HIGH-BYTE "Brand new image loading routine" Hold START during bootup/reset. Remember to dis/enable BASIC. A screen like this will appear. 0001<CBN>name_29_characters S 4-digit hex-number (joystick up/down left/right, fire=boot) < copy from image to floppy (press fire) C erase name (press fire) B boot (press fire) N save name (press fire) > copy from floppy to image (press fire), enter name first "name_29_characters" (keyboard, joystick left/right, NO function keys supported!) s Density of image. changeable s->m->d->s (fire) Only change this if you need to! To confirm changes in density, then do N 'save name' Please be patient while copying DD disks to images. The first 3 sectors take long to read! Information to make MyIDE-routines more 'open source' for programmers. Extended vector table. E483 = JMP HDINIT E486 = JMP HDWRI E489 = JMP HDREA E48C = JMP HDIMA OS-Identification Byte Located at: $C005 bit-7:1=ram-OS, 0-rom-OS bit-6:1=ext, 0=int MyIDE bit-5:1=MyIDE-OS, 0=other OS bit-0...4=serial number How to transfer data bypassing the SIO-routines: Set buffer address at $32/$33 Set length at $308 ($00=256 bytes). Except WRITE: this is always 256 bytes. Set $D103 (4.3I) or $D503 (4.3E) =sector ID ($01....max) Set $D104 (4.3I) or $D504 (4.3E) =cylinder LOW Set $D105 (4.3I) or $D505 (4.3E) =cylinder HIGH Set $D106 (4.3I) or $D506 (4.3E) =head ID ($A0....$Amax, lower 4 bits) JSR $E486 for write (OPTION-BYTE is checked. Minus = write protection) JSR $E489 for read BMI if an errors occurs How to start an image (with your software): Just set the cylinder in 03FE, 03FF (lo/hi) and density in 03F9 (SD=default). Then cold start you Atari with JMP E477. That's it. Otherwise, just hold START and press RESET. (Image-mode must be set to active with FDISK) Some things to know about the HDINIT-routine: 1-If HD is disabled or no detection: No init, just RTS (preserve last loaded settings). 2-If not loaded and HD is present: erase 03F9, 3FB-03FF and set according loaded partition-info. 3-If loaded, skip detection (preserve settings) Some things to know about the HDIMA-routine: 1-Check if START was pressed and images are active (fdisk): do select image, set OPTION-BYTE and cold start (boot). 2-Check 03FE/03FF for image-load (ORA<>0) then set D1: as this image. set OPTION-BYTE, RTS 3-Check if in power up and if 'start image-load' is active (OPTION-BYTE): do select image, set OPTION-BYTE and cold start (boot). Notes: Remember that the IDE-settings are protected for resets. So if you want to reload them use shift+control+R Holding SELECT + any kind of reset will coldstart and reload IDE-settings. This is also when entered image loading. After re-boot the HD is still write protected, the image selected and onscreen activity disabled. Cheers, Sijmen. |
Author: | mr-atari [ Thu Jul 29, 2010 4:24 am ] |
Post subject: | Re: EPROM-file: 4.3I, 4.3E for 1200XL, XL, XE and XEGS |
FIX 29-july-2010 Replaced fdisk with the later fdisk v2. For improved detection and some bug fixes. FOR 600XL USE THE NEXT POST. Grtz, Sijmen. |
Author: | mr-atari [ Sat Jul 31, 2010 3:39 am ] |
Post subject: | Re: ROM-file: 4.3I, 4.3E for 1200XL, XL, XE, XEGS *NEW 29jul2010 |
Here are 2 modded files that do a memory count and work in any XL/XE atari. 600xl will detect 16k and work, 800xl will detect 64k and work. Any usable memory size between 1-48k will be detected correctly. Enjoy. Sijmen. MyIDE 43i3 and 43e3 attached, for standard XL/XE (not XEGS, not 1200XL) |
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