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Yes they trace to that pin so I’m moving forward in attempting to figure another chip not sending the correct signal out that will help me configure this board.

I need help determining a graphic on the schematic. I’m using the schematic diagram here and I found a lifted pcb feed to one of the 74LS156 pins tied all together so I’m checking other pins but can’t determine what the open circle is at pins 1, 14 & 15. Thanks for the help, that pin 14 of U7 goes off and should trace to pin 12 of U12 but I’m uncertain about the open circle and my boards don’t seem to trace to that pin.

I misspoke. Both of my RAM boards have the D9Ks in them and I replaced it with a spare D9K. Sorry for the incorrect naming of the device.

Yes - I got them oriented correctly so it was easy to drop in the 1N34A to match it up with the others in there. Hope to revisit why this board is behaving so odd today by reexamining all my steps in the construction of the board.

Thanks for the info - to be clear I did have to run CFG1 and then load the ROS842 file and it asked if you wanted to keep the disk information - but it worked on getting the screen accurate and back to showing characters & numbers. On the problem with the new RAM disk board I decided to ‘Diode’ check the 1N34A’s and found a one reading too far out of range and sure enough it was cracked. I replaced it with the same type and I’m getting new results. Not to say I’ve got it resolved but the board moves along further in the Configuration program to allow Disk info to be made - it still won’t allow me to load a ROS because it lights the LED on turning the console on. It is recognizing ‘phantom’ boards again as GeneveROMpage items - further along or two steps back? I replaced each IC to see if there was an offending chip and none of the many ones replaced fixed the LED staying on. I started with the pair of LS244’s - both at the same time in the scheme of things it appears I am nearer to trying to get to a resolve with the HRD 4000B, but at the same time it appears to be back to detecting too many non existent Geneve ROMpage items as before. But it gets past the Configure screen with toggling the RAM cards on and off switch so I can access the floppy controller. IMG_3214.mov

Reloading the ROS (DSR) worked for the working 4000B card! It looks as it should. Now back to the other RAM board and trying to configure it. 73562530169__746EE736-5EE0-4EA9-910E-63FD5142AB98.MOV

Oh now I went and did it… the MENU for the working 4000B associated numbering on the items is corrupted or something got changed. There is probably an easy fix rather than reload my whole RAM disk (if necessary I’ll wait until I get the other card sorted out first) but the numbers all look scrambled and the text at the bottom doesn’t look quite right. Any thoughts? IMG_3216.mov Hopefully this is an easy one to correct. While the thoughts are pouring in here is some TI midi master ‘classic’ tune to enjoy. IMG_3215.mov

I’m using the 32K option with both chips installed. I have an internal card that I can throw in and remove the optional chips to see if that might make a difference… I’m running on a TI. Both transistors are flat side toward the bottom. Thank you for the helpful advice and tips on trying before and for the schematic diagrams and manual links. I’m wondering where the six (Russian style) diodes are in the schematic? It is not evident or are they elsewhere and not depicted. Also k did get clarification that the schematic calls out 30uF tantalum and that they are indeed 10uF

I’m usually better than this on TS&R problems like this - my other two RAM cards work in the PEB. But this one lights when I turn the console on and I think if I can resolve this that the unit will configure without any hesitation. I might be overlooking something but it’s really being an evasive problem that is not easily traced after swapping out all the other IC’s on the working 4000B, each time hoping that the LED would light briefly and then get past the ability to load a disk to complete this configuration, getting to a scenario where the board stays stable so that when you try to load a ROS that it doesn’t skip past a screen that says press any key makes me think this board is actively sending signals out to try another attempt but it’s not real promising of getting to a resolve yet. IMG_3214.mov

I did swap out LS154. It’s still not configuring. BTW It lights up the front LED on power up and hangs the whole system - (this is what I found allows the system to boot to E/A cartridge - power cycle the console three times, or turn the 4000B off then back on). Once it ‘looks’ for the RAM disk it pretty much needs to be turned off and then back on to try to negotiate with the PEB, otherwise the light (LED) remains on; am I overlooking something?

Continuity test look good with a few that showed a short but verified with the good 4000B that it was the same so it seems consistent. There was voltage to pin 7 of U1 which wasn’t on the good 4000B IIRC it was about 2.1 volts. Not sure where this would be coming from (I mean the battery once it was powered off the voltage was not there) but it seems odd - could be the reason for the odd scenario with this board- thanks for the help!

Yea the IC’s were all swapped out / no change / going to try to detect the solder condition of perhaps a blob beneath the socket - starting with the 74LS244 sockets.

I’ll start changing out IC’s to see if there is an offending chip giving the board angst.

The one board I bought populated. This one is a bare board project and I’ve built it over the past 6 months - ran into this snag on the configuration as it still won’t just behave in either of my systems.

I changed out the LS244 chips and got the same results as before. I will check the other chips to determine if one of these is causing the fault.

I took the chips out of the sockets and resoldered each of the LS244 socket pins - but it still shows the Geneve ROMpage instead of the RS232 and PIO

I have the jumpers set the way my other HRD 4000B is set, so no, the card is not set up in split mode. I’ll double check the solder joints around the jumpers though. Thanks for the help!

The RS232 and disk controller show up with the RAM card off. Its when the RAM card is on that the Geneve ROM page shows that it’s in the ‘system’.

Making some progress. Still card is visible ‘all’ the time but the extraneous or ‘phantom’ card addresses are gone. CFG1 when ran gives two scenarios - it will hang the system on the PEB with the TI controller - the other system with the Corcomp DS DD controller performs a system restart. But will not load a ROS.

Got in again - but I’m at a cursor again I can type in numbers but what commands should I be using?

Is there something up with the site? I have a cursor only on the screen. I attempted both the Web based log in and telnet with Sync TERM.

The file is a D/F 128. It was copied from to make it available to DSK1 and plays when load from Disk but not from the RAM disk. How does one use a RAM disk listed as an alpha character such as (A, B C etc)? Funnelweb won’t accept it as a character in diskreview.

I’ve recently got out the Music Maker cartridge but wanted to know if anyone uses this cartridge? I’ve downloaded some music files from The Keep and wanted to know about an error I’m receiving accessing the files from my RAM disk. I have to load Music Maker from the Function ‘9’ twice - bypassing the menu from ROS to load the cartridge and playing music from the files. Children, Christmas ( 3 voices) Classic#1( also 3 voices) and Classic#2 (3 voices as well) load from dsk1 but in an attempt to load from option 5 (other) DSK8 gives an error as shown here. Has anyone run into errors where they can’t access the data from a RAM card? Thanks, Ray

My TI99 MIDI master plays out on my musical equipment from a HRD4000B. I can either load music files from the Album using the Mini Memory cart or directly from the Midi Master program. Loading from RAM certainly makes a difference in switching to the next song, speaking of which if anyone has the play in program can you provide a copy or if it is available for purchase I’d like a copy. Hidden Reef still doesn’t have the files available for download yet. Thank you, Ray Mihalko 72032851483__DFCBCDF0-69BC-4703-908C-AE853D60CEBE.MOV

There are a couple of cards in the PEB that I purchased back from Cecure when I upgraded to a PEB back in the day. A MBP clock is in the one system and the rs232 card and floppy disk controller. The other system just has a floppy controller, rs232 card and 32 k memory card until I upgrade the HRD 4000b with the chip once I get things sorted with the card.