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Just getting into TBXL 1.5 (NTSC DOS 2.x built-in), so far, haven't noticed a big difference between it and BASIC XE in terms of speed, if any. Anyways, 1 thing I did notice is more 'normal RAM' available, which is good, but [EXTEND] command no longer works. How do I access that with TBXL ? My 1200XL has the 256K RAMBO if that matters. Thanks !
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- turbo basic xl
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Who happens to have a copy of the QS-Ramdisk DSK that was specific for setting up the Foundation 128k memory card as a ramdisk? The software was developed by Quality 99 Software. I was not able to find it on WHTECH.
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I'd like to do a little experiment using the TiVi edtor I'm currently working on. What is the largest DIS/VAR 80 file you were able to load and browse on the TI-99/4a? I'm trying to get my hands on some big DIS/VAR 80 files and with "big" I mean that it should be at least > 100 kilobytes. If you have such file and don't mind posting it (as a disk image). I'll try to load it on the TI-99/4a. For further details on the editor see here:
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I'm using my HDR ramdisk a lot while developing my TiVi editor. It's a real time saver. It's especially helpful when dealing with large files (which is kinda my primary purpose why I started working on TiVi). Today I read the updated documenation the InsaneMultitasker provided as draft. In there I learned that with ROS it's possible to use data buffers that reside in CPU RAM insead of VDP RAM. That is something I really want to try, because even with a RAMDISK reading a large file (think >100 kilobytes) takes some time. Now my challenge is; How can I easily detect from assembly language if I'm dealing with a "high-speed" disk device compared to a "slow" disk device ("floppy"). With a high-speed device I mean: CF7+, Nanopeb TIPI HDR ... I see differents possible paths here: CRC checksum on DSR space (but won't work with RAMBOS? Self modifiying code, configuration stored here too?) Check on some specific device feature? Actually I think that the CRC checksum logic would work quite well (I already did a test program on that about a year ago), but I'm not sure about HDR. Thinking about it would be cool if there is some unified way to detect device capabilities accross devices. For example a standard where there's a device "capabilities" file that is automatically created when the device is formatted. That file could then be processed from TI-Basic, assembly language or any other language supporting file I/O. Any ideas?
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I'm looking for help identifying contributors to the Horizon ramdisk hardware (not software) for some documentation purposes. Here's what I think I know: Ron Gries did the original HRDs, Bud Mills laid out the HRD2000, HRD3000, HRD3000B, and HRD4000 (?), Ron Walters may have designed the PHOENIX mod (?), Gary Bowser may have designed the RAMBO mod (? and the circuitry that "unhides" the upper 2K of ROS or was that someone else?), John Guion may have designed the 32K expansion mod (?), and I've also seen mention of Dave Romer, John Culow and the 99'er users group? Please correct any/all of this if you know the history and certainly if I'm missing someone.
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Ramdisk driver for MyDos4.53/4 and Sys-Check 2 512K RAM
E474 posted a topic in Atari 8-Bit Computers
Hi, Following on from http://atariage.com/forums/topic/287691-ramdisk-driver-for-dos-25-and-sys-check-2-512k-ram/ I have tried out various configurations of MyDos and the RamDisk drivers together with a Sys-Check 2 card, and have managed to get it to work as a 512K Ramdisk. I ended up using MyDos 4.53/4, as this is supported by dir2atr (MyDos 4.55 isn't supported by dir2atr). I used the MYRD2 ramdisk driver, which is part of MYRD.ARC (written by Lee Barnes). I've attached a working ATR that should be good for anyone to use with a Sys-Check 2 card (I followed the instructions in the Ramdisk readme, and wrote the Dos files back to disk after booting with the Ramdisk driver). The files on the disk are: DOS.SYS, DUP.SYS - MyDos versions MD.ARC - Compressed Disk Communicator image of MyDos MYRD.ARC - sources and ramdisk drivers DISKCOMM3.EXE - disk communicator 3 by Bob Puff MYRD2.AR0 - the Ramdisk driver that works with SysCheck 2 for 512K Ramdisk UNARC.COM - super-unarc by Bob Puff Thanks to all that helped, I got all the files from http://mathyvannisselroy.nl/mydos.htm - I've just combined them into a single ATR for ease of use. Hope this helps. MyDos4.534.ramdisk.syscheck2.atr -
Hi, Does anyone have a Ramdisk driver that uses (all?) the 512K RAM of a Sys-Check 2 card, and works with DOS 2.5 (not sure if DOS 2.5 would have to be hacked to work with such a big Ramdisk)? I have found a hacked DOS 2.5 that works with 256K, but am wondering if there is one that uses all the Sys-Check 2 memory. Any help would be appreciated!
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I've been trying to repair a Horizon RAMdisk 4000 and have run into a snag. Using the minimem debugger, I can turn on the card and access the 8k/32K ROS (Ramdisk OS) chip at 0x4000-0x57ff. When I write even bytes to this space, I can read the byte back. When I write to the odd bytes, it always reads back as "00". I have tried both a working 8k and 32k chip, and set the jumper to 8k/32k with no change in symptoms. In the rack space from 0x5800-0x5fff, both odd and even bytes work as expected. This 2k space is not part of the ROS 8k/32k chip; it is banked in from the rest of the on board sram chips. As a test, I placed the ramdisk in the Geneve, formatted it with the OS, and it reads/writes data just fine. (The geneve does not require the 8k/32k ros). I reviewed the construction manual but haven't come up with any ideas or clues. It seems to me that a stuck address line would cause an odd read/write to overwrite an even address, yet that doesn't happen either. Any ideas?
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I would like to request from whomsoever might have it, a copy of the documentation for the Rave MX01 card. I have started going thru my storage and am trying to find out which cards and equipment will work without deeper labor, but I need manual(s) and I have done a pretty thorough search of Whtech, though I may be missing something. Can one of you point me in the right direction. Thanks,
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If anyone can use them, the attached ATR has several utility programs I've written. SORTDISK will sort the directory of any ATARI DOS disk (including DOSXL). Since Atari DOS stores the file number in every files data sectors, it will rewrite each file with the new file number. I am working on a new version that does not require data sectors to be rewritten FIXDISK will repair disks of common problems. Opening a file for output and not closing it can cause hidden directory entries that chew up space on your disk. Run this utility on your disks and if there are any errors it will report on them and repair them. If there are lost sectors on your disk it will give them back to you. UNDELETE will undelete a file as long as the data sectors in the file have not been reused by another file. If so, it will tell you that the file cannot be undeleted. RAMXL is very cool (if you are running on an XL machine). When using DOSXL, external commands such as COPY, DUPSK, etc. have to load into memory every time you use them. Rename RAMXL.COM as AUTORUN.SYS. On a DOSXL disk, change the extension of COPY.COM to COPY.MEM. You can rename up to four files (such as DUPDSK.MEM, INIT.MEM). When you reboot your disk, RAMXL will search for file with the MEM extension and store them beneath the OS. Now, to run any external command, prefix it with RUN 2300. For example, to copy a file your would key in RUN 2300 COPY <File A> <File B> Or to run DUPDSK you would key in RUN 2300 DUPDSK Finally, a hidden utility. Atari DOS will only let you store 64 files on a disk, even if it is a double density disk and has lots of room. This ATR was created with a utility I call DOS CD (capacity doubler). It will allow you to store up to 128 files on a DD disk. If you boot from this disk and then create new disks using INIT to rewrite your DOS files, the new disks will also have DOS CD on them. I hope someone finds this stuff useful. Utilities.atr
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Operating Manual HORIZON RAMDISK USER OPERATING MANUAL 9-12-2023.pdf Distribution: ROSCFG842C 3-27-2020.zip ros842c_20200327.dsk Replaced CFG with 3.27.2020 version CFG: Powerup setting now saved and restored properly when re-loading ROS CFG: Removed Myarc floppy controller detection; CorComp w/MG EPROM was incorrectly identified as Myarc Added disk image 11Nov2020 (thanks @mizapf !) Basic Instructions: Wiki: https://github.com/horizonramdisk/Horizon-Ramdisk-ti994a/wiki/CFG Older release notes and files: