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Krebizfan

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About Krebizfan

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  1. Paragon GPT Loader was the product to that did that. I remember it worked with the initial batches of 3 TB drives but I wouldn't trust it with any critical data stored on a 12 TB drive. That type of utility needs very accurate information about the drive and software written a decade before the drive was manufactured is unlikely to have that. LBA-48 broke the 128 GB barrier but XP was still limited by the MBR limit of 2 TB.
  2. Depending on the software, it may be necessary to increase Files and Buffers from the defaults. Even something as simple as Kermit needs Files=20 and Buffers=20.
  3. The BSAVE code should be saving the text screen contents to a file named "SCREEN0." DEFSEG=&HB800 puts the start of the segment at the beginning of the memory assigned for text screens. BSAVE "SCREEN0" assigns the file name; ",0" starts reading memory from &HB800; ",4000" will save 4000 bytes or the contents of a 80x25 screen including the attributes. The second version BSAVE "SCREEN2",0, &HB800 looks like a mistake. Trying to save 41K out of 4K might cause problems even if the screen memory is duplicated over the entire 32K range. It looks like multiple programs were used with the third screenshot showing a possible demo program designed for the movie that BLOADs the previously setup SCREEN0 (simulating some complex application) followed by outputting a graph.
  4. Have you looked at flaxcottage? Seems to have 14 out of 15 issues.
  5. Have you tried sharpmz.org ? That has a good amount of information. Note, a lot of the information is held in the older "original" website done before the change in ownership. There is a link to it on the front page but easy to miss. It also provides a forum that replaces the forum that used to be run by the Sharp Users Club, much smaller and less active but at least something. I relied on that the last time I helped someone through Sharp MZ issues.
  6. Consumer use for Compuserve started in 1979. Off-peak hours were cheaper. I forget exactly when the free starter kits emerged in an attempt to attract the more casual user as opposed the big clients that used the service during standard business hours.
  7. Before Arpanet started which led to the Internet as now known, there were online services and other dial-up providers. These gave banks of modems with local numbers that then passed the connection through a dedicated link to the central computers. CompuServe got bought by H&R Block because it was cheaper to use this form of connection than to have each local tax preparation office make a long distance call for updates. CompuServe then opened up to consumer use during the nights when business use was reduced. Similarly, GEnie was started so GE computers could have revenue during off hours. All of these and many BBSes opened up gateways to connect to other services through the nascent internet. The ISP took the concept but skipped the central mainframes to instead have the modem transfer to standard Ethernet router. Internet service needed higher speed modems to become workable. The overhead of HTTP would be very noticeable on 300 baud modems. The old online services were optimized for the slow transfer rates which hampered them because it was difficult to get the flexibility a mid-90s website could achieve.
  8. https://thejournal.com/Articles/1997/06/01/Computers-in-Education-A-Brief-History.aspx?m=1&Page=1 is an academic overview of the entrance of computers into education. The key section would be on page 4 That is only 10 years after the IBM sponsored initial experiments that led to the Sumerian Game. In less than another 10 years, Billboard magazine was tracking sales of educational software. The move into the mainstream was fast. RCA was a special case. Their computer line was failing against IBM so they pivoted to the educational market by creating a unit* for that purpose in 1967 (including the ad seen previously) following a successful launch for Vo-Tech schools in Oklahoma in 1966. Didn't help RCA move machines; the entire computer division was sold off by 1971. * https://www.nytimes.com/1967/03/14/archives/rca-develops-education-system-computer-unit-for-schools-dedicated.html describes what RCA was doing in 1967.
  9. Even cheaper was the CARDiac, a cardboard CPU emulator. https://www.cs.drexel.edu/~bls96/museum/cardiac.html The sample code includes a demonstration NIM game.
  10. Not a weirdly named facebook group or forum but the archive of the very old Z-100 lifeline can be seen http://kuanbutts.com/z100-preserved/data/Z100Begin.html https://z100lifeline.swvagts.com/index.php Bitsavers has a number of manuals. Those may be necessary to figure out what options are installed and where to find the key jumper that makes the video work with an IBM PC compatible CGA monitor. Also, many of the Heath/Zenith magazines are online. Helpful to figure out what normal software can be made to run on the Z-100. Good luck. It is a fun little machine.
  11. Would more than 100 pages of reviews and explanations of modems during the 1200/2400 baud transition suffice? https://archive.org/details/PC-Mag-1987-05-12/page/n103/mode/2up That would be before the chip designs became standardized and the major difference between external modems was the look of the shell.
  12. The USB97cfdc from SMSC was intended to provide the capability to connect a floppy tape drive to USB. Finding a 25 year old chip and the necessary driver source code which would need modification to successfully attach a tape drive seems unlikely.
  13. The prices of expansion cards for the Apple II were often low enough that anyone considering making a motherboard modification would need to spend more getting the components. The two socketed CPU replacements were about all I can think of for the motherboard without using expansion slots. Apple also made it very affordable to upgrade to a newer motherboard further reducing the need to modify the board. The IBM PC/XT had a range of tweaks to the motherboard. The XT could have the motherboard improved to support 640 k with the addition of 256 kbit memory chips, filling an unused socket with a decoder chip, and running a single wire. Changing the oscillator to get a higher clock speed or switching to a V20 was common. The PC Jr and Tandy 1000 got an option to fix their of their major flaws with a daughtercard that plugged into the 8088 socket and provided both an 8088 and 8087. All the IBM PC related systems went through a brief period where the idea of reducing the frequency of RAM refreshes was popular, gaining a modest speed increase at the risk of crashing.
  14. I found matching titles for disks listed in a number of ads for shareware collections. I expect that one of the shareware CDs archived out there would have the same contents but the indexes for shareware CDs are rather poor. Comtec Software was a shareware distributor for Apple II, Commodore, and IBM located in western New Jersey.
  15. Brother one-upped HP. HP needed a cartridge for Epson emulation. Brother built-in emulation for Epson, IBM Proprinter, and HP Laserjet. Printer Emulation Support (brother.com) Not all laser printer models and some have lost the emulation in addition to no longer having parallel ports.
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