Bootstrapping an Apple II with ADTPro

this is an apple 2gs that i recentlypicked up on ebay it came complete with drives but included no software today Iaim to fix that hi I’m Matt D’Amico and welcome to episode 3 of retro bits happyMemorial Day weekend I hope you’re all is working well and standing safe during thesedifficult times myself I’m staying in this weekend so why not make anothervideo let me start off without saying that I don’t know much about Apple twos fromthis period my family had a to see back in the daybut I exclusively used it for message handling and playing some tournaments so I’m learning alot of the stuff for the first time now “youre supposed to” noticed that the machinedidn’t come with an Apple monitor so I cobbled up a quick and dirty adapter thatconnects an apple db-1 5 or Atari ST din-1 3 AV output to anycommon or RGB monitor that consents din or db9 RGB input now I do are projected to do amore comprehensive video on this machine in the future and fix some issues thatit has but for today I exactly want to get some software onto the machine and tryit out the problem we face is that pcs use an MFM encoding on their driveswhereas Apple twos of this period utilization GCR or radical code recording what this meansis it’s not feasible to write Apple software on a modern PC it can be donebut you need a special drive controller and software and apparently the softwareonly works on pre NT kernel Windows machines so ME and earlier so assumingwe have no other structures with GCR drives available to us how do we get softwareto our Apple to enter ADT Pro this super handy piece of software not only allowsyou to transfer countless common disk idol formats directly to your machine but italso allows you to bootstrap your machine with no existing media it iscapable of booting itself by a system serial port or even cassette interfaceand are working with any Apple 2 or 3 machines afforded they have sufficient RAM andone of the patronage i/ o machines the ADT Pro server extends on Windows Mac and Linuxmachines and is available for free at the link in the description to connectyour Apple 2 up you’ll need a mini outcry serial cableconnected to the modem port I further attached to DB 25 to db9 null modem anda gender changer to this PC USB serial port dongle for the 2 GS make sure slot2 is set up as a modem and accept the default system trains in the controlpanel for the modem port in the ADT Pro server configure your comm port andaccept the default speed locates in the bootstrapping menu select ProDOSspeediboot you must then boot your Apple in to basic by hitting controlbrake as soon as it starts moving ADT Pro will cause you to enter severalcommands and then the process begins in two gives basic to accept input fromslot 2 in this case the serial port domination a transports command attributes tothe card and slit 2 and 14 b moves the baud rate of the design to 9600 baud asdescribed in the apple 2 serial port firmware interface dictations uponclicking the ok dialog the server begins casting authorities over the serial portthat direct the Apple to enter the machine language monitor and input theADP Pro client code directly it altogether blows my recollection that Apple 2has had this capability all the way back in the 80 s even in the 90 s simply high-endservers could boot from the network interface until PXE booting becamecommonplace ADPPro is a clever hack but it highlights how much thought went intodesigning these machines in the first place once the software consignments you havethe ability to perform some basic disk functionings such as formatting of floppyonce that’s accomplish you can use the receive function to download a bootablecopy of the ADTPro software to disk for future use the transfer is surprisinglyfast in this example I’m copying an 800 K three-and-a-half inch floppy image todisk it would be significantly faster to facsimile the 140 K likenes to a 5 and 1/4 inchdisk but that drive doesn’t work properly so it’ll be investigated in thefuture bout let me take a second toapologize for all the CRT footage I don’t currently have a method ofcapturing video instantly from the 2gs but I’m working on a answer for nexttime so there we go our first bootable floppy if my nappy math is correctthe average move pace was right around 51 kilobits per secondnot bad for 1986 so now that I can transfer software to the machine I canset it up and start using it so that’s it for now thank you so much forwatching and we’ll see you next time on retro flecks

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