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erichenneke

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Posts posted by erichenneke


  1. Just played the game myself "for Atari" for the first time, using Altirra for now.   I played in both NTSC and in PAL mode. 

     

    It's beautiful, and exactly the behavior and game-play mechanics expected that was such a hallmark of the Jordan Mechner games back in the day.  The music and sound is terrific, and the title screen is icing on the cake.  Not to mention that impressive intro while loading.   

     

    Wonderful job, and it's great to see this on Atari finally.  And so perfectly implemented too.

     

    Can't wait to try it out on my real hardware later.  

     

    -Eric

    • Like 2

  2. 5 minutes ago, vitoco said:

    Hey!

     

    James and Tanya will play all the tenliners I've published during the @ZeroPage Homebrew livestream tonight at 6PM PT | 9PM ET | 1AM GMT+1Day

     

    ZPH-20210907-LetsPlay-tenliners.thumb.jpg.4e83e481dc347c9f4596a863dc6e7b1d.jpg

     

    This will be a marathon of 35 games in about 3 hours.

     

    https://www.facebook.com/zeropagehomebrew/posts/1681712908886235

     

    Super cool !   

     

    Wow, 35.    I have a ways to go with my measly 8.   :)

     

    Should be great too see them shoot through all your games. 

     

    • Like 1

  3. 11 minutes ago, moonlight_mile said:

    I spent a pile of time getting my Rfd-44 working a few years ago. Went through a lot but it boiled down to the 6809 went bad. I think it was a heat issue as shoe we had it before myself drilled holes in the back of the case and mounted a noisy fan on the back along with removing the blanking plate.

    So if the motor dip switch doesn’t work look into one of the chips.

    thanks, will look at that too.  Hoping nothing is actually "wrong" with the drives and I just have something in the configuration/settings it doesn't like.  Going to exhaust that first. Good to know though.


  4. 9 hours ago, glurk said:

    erichenneke-

    I have a Percom drive (RFD44-S1) and a "similar" setup, with a PC-style 3.5" drive as the slave drive (set to DS1, as they usually are).  Must use a STRAIGHT cable, no twists!  Both work A-OK, DSDD and all.  Like you, I also managed to put a ton of files on one 720K 3.5" disk.  Here is what works for me.

     

    On the master drive, I have all 4 DIP switches set to ON.  Contrary to the docs, but it works.  On start-up, the slave drive must be powered on FIRST, then the master.  Then power the computer.  I also use MyDOS, and set the 3.5" drive to 80 tracks, double-sided, step rate 1.

     

    This is all working perfectly for me.  Maybe try all 4 DIP settings to "ON".  Also, my master drive has a shunt, which is like a hardwired DIP switch with no switches, and the only connections are DS0 and HM.  Which is Atari D1: and HM is motor control.

     

    The Percoms seem to "motor-on" all attached drives normally, no way around that, I believe.

     

    See if this works for you.  Much of the documentation seems to be error-prone.  This setup is what worked for me.

    thanks, will try that.  Eventually I want to put a 3.5" in the mix anyway, but first I'd like to see it all working correctly in the "stock" state before I introduce new modifications. 

     


  5. OK, I do have a different, but related question back to Percom drives. 

     

    I looked around in other threads and other information (and went through the manuals multiple times) and still having this issue.

     

    I have a "set" of Percom RFD drives (a mother/controller drive unit and the slave drive unit).  Both units still have their original full-height 5.25" floppy drive mechanisms in them (both are full height).

    RFD40S1 (main mother/controller Percom unit)

    RFD40A1 (Percom slave unit)

     

    Generally, I have them working now for the most part, but something is not right.  It seems they are functional, but something isn't connected or configured quite right. 

     

    I have them set up where the mother/controller drive is drive 1 to the atari, and the slave is drive 2.

    I have the terminator chip REMOVED on the mother/controller unit.

    I have the terminator chip INSTALLED on the slave unit.

    I have the back dip switch block (on the rear portion of the mother unit controller card) set to 4=off, 3=off, 2=on, 1=on  (per the manual, this should be DD default for both drive 1 and 2, and also make the controller drive default to drive 1).

    I have the jumper chip on the slave unit drive mechanism board set with the proper pins to identify it as location 2.

     

    If I boot up using a 1050 drive for example, and then swap my IO cables to the percoms, everything seems to work pretty well.  Meaning that the first Percom drive (mother/controller drive) works when you reference drive 1 and the second Percom unit (slave drive) works when you reference drive 2.   Ok, great, that seems to work as it should.

     

    BUT, if I reboot my Atari system with the Percom mother/controller connected to SIO cable as drive one and the slave Percom unit as drive 2 (with a formatted bootable disk in Percom drive 1 of course) thing go bonkers.  It boots for a little while and sounds/seems normal, but then after the first pause it does something weird, it starts spinning BOTH Percom drives at the same time and seems like it is trying to read from both of them concurrently. The booting sounds start to sound terrible, and clearly something is not right, and it will just stay in this loop forever with both drives spinning, sounding bad, and grinding every once in a while.  It never gets to DOS or READY prompt, and it also never gets an error.  It just keeps spinning both drives and trying to read (seemingly both drives concurrently) and keeps sounding bad and grinding, forever. 

     

    Does somebody have a working RFD "set" like this (with an RFD40S1 mother/controller unit and RFD40A1 slave unit) that they could check out all the dip switches, terminator chips, and jumpers on both units and tell me what they are set to exactly?  I am convinced I still don't have something right with the terminator chip, or the dip switch block on the main controller unit, or the jumper chip on the slave unit, or maybe even the jumper chip on the mother/controller unit mechanism.   I don't know. I've tried to follow the manual exactly and other info I've found, but there are still some things that don't seem crystal clear so good chance I still have something wrong. 

     

    That would REALLY help if someone could share that info from a known working "set" of Percom RFD drives.

     

    Thank you!!!

    -Eric

     

     


  6. 9 hours ago, erichenneke said:

    Yep, no problem...

     

    Using the ATR8000


    Attached the Fujitsu M2553K03B 1.2MB 5.25" drive to the ATR8000

    The M2553K03B has a soldered jumper in place for DS1 as the default (which identifies it as drive 2 to the Atari setup).  I just left it that way and referenced it as drive 2. 


    Then I used MYDOS 4.50 

    and the following...


    DOS option "O" (change config)

    Drive Number: 2

    Remove Drive: Y


    DOS option "O" (change config)

    Drive Number: 2

    Remove Drive: N

    Is drive configurable? Y

    High capacity drive: N

    I drive double sided? Y

    Tracks/side? 77

    Step rate:  3


    Then I formatted a HD floppy in drive 2 (the Fujistu M2553K03B attached to the ATR8000) 

    It shows 3991 free sectors after formatting. 

    See photos...

     

    IMG_20210725_013232.thumb.jpg.55d4e221c1bd9c95b9c40cbc863859bc.jpg

     

    IMG_20210725_013447.thumb.jpg.b6b05fe9d4abc6746c5bf60e818a6e54.jpg

     

    IMG_20210725_013356.thumb.jpg.1561d16c8268841e3876dd00eef77bb0.jpg

     

     

     

    Just adding one more screen shot which also shows the MyDOS version details at the top...

     

    IMG_20210725_013539.thumb.jpg.bfe7a47a63f372d2f0422e5bbe429f34.jpg

     

    By the way, I copied a bunch of file content to one of these HD floppies and it seemed like a bottomless pit that would never fill up!  Almost like having a hard-drive.  :)

    But it does take a while of course.   

     

    Wish I would have had one of these back in the day when I ran my BBS... it would have been terrific for making a TON of files available for download without requiring a super expensive hard-drive.  I remember the HD-capacity floppy drives were just coming out around the time I was running my BBS, but of course they weren't exactly cheap at that time either!   

     

     

     

     

    • Like 1

  7. 5 hours ago, glurk said:

    erichenneke-

    Hey, could you please post some specifics on HOW you got this to work?  With the Percom or the ATR8000?  Or both?  What settings?  What DOS? and etc., etc. etc...  This could be helpful to other people too, if it were explained a bit more.  I know it would be helpful to me, LOL!!

     

    Thanks!

     

    Yep, no problem...

     

    Using the ATR8000


    Attached the Fujitsu M2553K03B 1.2MB 5.25" drive to the ATR8000

    The M2553K03B has a soldered jumper in place for DS1 as the default (which identifies it as drive 2 to the Atari setup).  I just left it that way and referenced it as drive 2. 


    Then I used MYDOS 4.50 

    and the following...


    DOS option "O" (change config)

    Drive Number: 2

    Remove Drive: Y


    DOS option "O" (change config)

    Drive Number: 2

    Remove Drive: N

    Is drive configurable? Y

    High capacity drive: N

    I drive double sided? Y

    Tracks/side? 77

    Step rate:  3


    Then I formatted a HD floppy in drive 2 (the Fujistu M2553K03B attached to the ATR8000) 

    It shows 3991 free sectors after formatting. 

    See photos...

     

    IMG_20210725_013232.thumb.jpg.55d4e221c1bd9c95b9c40cbc863859bc.jpg

     

    IMG_20210725_013447.thumb.jpg.b6b05fe9d4abc6746c5bf60e818a6e54.jpg

     

    IMG_20210725_013356.thumb.jpg.1561d16c8268841e3876dd00eef77bb0.jpg

     

     

    • Like 3

  8. On 5/23/2021 at 2:11 AM, Nezgar said:
    Maybe stating the obvious, but are you using known good HD media? (Not DD media). Usually 1.2MB HD disks have no hub ring.

    Wow. This is a "smack my forehead moment".

    I had never thought about the actual media needing to be anything higher than DD because, well, I never associated HD media with Atari 8 bits before.

    Totally makes sense of course!

    And, yep, it works fine with 1.2MB HD media.

    Duh!

    Thank you for stating the obvious. Sometimes it needs to be stated!

     

    • Haha 1

  9. Here's an AACE (Austin, Texas ACE) newsletter from February 1985 that I just ran across and decided to scan.

     

    Yeah, these really take you back as a snapshot of what was going on.

     

    Atari at CES

    Pricing

    Atari Corp news, Lucasfilm and Epyx news, Broderbund news

    Infocom Hitchhikers guide

    Hardware DIY project

    Disk parties

     

    AACE0285.zip

    • Like 4

  10. On 3/28/2021 at 6:06 PM, erichenneke said:

    Here you go.  

     

    I also tried a dvi to vga adapter and that didn't work either. 

     

    The svideo out on the 800xl does not work with sophia2 installed.  But it does work with the gtia chip put back in place. 

     

    -Eric

     

     

    DSC_1138.JPG

    Ok all, i have an update regarding Sophia 2 and it makes me feel pretty silly.  Yet, it is important I share this I think just in case somebody else runs into similar "challenge".

     

    I was previously having a problem where after I installed Sophia 2 it would not get an image through the Sophia 2.  And it also would not get an image through the SVIDEO port either.  

    This led me to believe that the Sophia 2 was bad.  

     

    Well, I gave it another shot a couple days ago with the same initial result.  

    But then as I was looking at the motherboard and the chip that I was replacing, I googled the chip markings out of curiosity, and the description came back saying it was a Freddie chip!  What?!   

     

    Then it hit me, this board is a 800 "XLF" (with Freddie) system.  Which means the GTIA is not in the usual lower left hand location like most 800 XL boards.  

    Oh my God !    I have been replacing the wrong chip this entire time.  DUH.  

     

    So I put the Freddie chip back in.  Located the proper GTIA chip location to replace, and installed the Sophia 2 there at the correct location.

     

    Of course then it worked perfectly!  AND WOW, IT IS ABSOLUTELY BEAUTIFUL.  Finally working, but it was well worth the way.

     

    Also, something else I wanted to share...  On these 800 "XLF" boards (with Freddie chip), there is an aluminum electrolytic cap right next to the GTIA.  It is SO CLOSE to the GTIA that when you try to replace the GTIA with the Sophia 2 device it doesn't have clearance and will not allow it to seat into the motherboard (because the Sophia 2 will hit the cap). 

     

    My solution to this was to first stack another empty socket on top of the existing socket, and then plug the Sophia 2 into that stacked socket.  This gave it the perfect amount of clearance to seat without hitting the cap, but also still low enough that it doesn't have any problems fitting under the keyboard when the system case is put back together.

     

    See pictures below.

    IMG_20210706_012228.thumb.jpg.596d6e36b4fd40b222eab0854ab70192.jpg

     

    IMG_20210706_012214.thumb.jpg.cc15c31dcbca1922af7a3f5c40bac021.jpg

     

    IMG_20210706_012305.thumb.jpg.7b546b01f0f61c721c0a6cb7510dd86e.jpg

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