Apple IIe (enhanced) start-up problems

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Apple IIe (enhanced) start-up problems

On my  Apple IIe (enhanced) I get the two beeps, the power light is on, and have this on my screen: "0102-    A=00 X=FF Y=00 P=77 S=EF"  followed by the * on the next line.

So far I  switched out the floppy disk drive, analog card, serial card, extra memory card and power supply.  I plan on ordering some replacements IC to try and swap some out....I would like help narrowing down the problem.

 

 

 

 

 

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Diagnostics

What happens when you run the built-in diagnostics (both Apple keys pressed when resetting)?

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MacFly wrote:What happens
MacFly wrote:

What happens when you run the built-in diagnostics (both Apple keys pressed when resetting)?

When I run the the built-diagnognostics I get "SYSTEM OK".

When I do the apple reset, this comes on the screen at the bottom of my screen.  

 

 

 

 

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It is dropping to the ROM

It is dropping to the ROM Monitor. Pull every IO card entirely, so that every slot is empty, and tell us if it goes to BASIC. 

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Timelord wrote:It is dropping
Timelord wrote:

It is dropping to the ROM Monitor. Pull every IO card entirely, so that every slot is empty, and tell us if it goes to BASIC. 

Yes it does. What should the next step be?

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Hessen wrote:Timelord wrote
Hessen wrote:
Timelord wrote:

It is dropping to the ROM Monitor. Pull every IO card entirely, so that every slot is empty, and tell us if it goes to BASIC. 

Yes it does. What should the next step be?

 

Please list all of the peripheral cards that you have in the system. Personally, I would install them one at a time, power on, and see at what point it drops to the system monitor. This recently happened (for me) using a 3.5 Drive Card on a non-enhanced //e, and likewise, on a ROM 0 //gs mainboard. 

 

I have been unable to determine why the 'upgrade' version of the //gs mainboard is doing this. 

 

I am going to bet on a Disk ][ or Apple I/O controller being the culprit, but it would be best to check, and to list all of the cards that you are using, and their slot locations. 

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Timelord wrote:Hessen wrote
Timelord wrote:
Hessen wrote:
Timelord wrote:

It is dropping to the ROM Monitor. Pull every IO card entirely, so that every slot is empty, and tell us if it goes to BASIC. 

Yes it does. What should the next step be?

 

Please list all of the peripheral cards that you have in the system. Personally, I would install them one at a time, power on, and see at what point it drops to the system monitor. This recently happened (for me) using a 3.5 Drive Card on a non-enhanced //e, and likewise, on a ROM 0 //gs mainboard. 

 

I have been unable to determine why the 'upgrade' version of the //gs mainboard is doing this. 

 

I am going to bet on a Disk ][ or Apple I/O controller being the culprit, but it would be best to check, and to list all of the cards that you are using, and their slot locations.

Here are the peripheral cards :

1. Super Serial Card - Slot C1

install = Apple //e prompt

2. Memory IIe card - Auxillary Connector Slot.

install = Apple //e prompt

3. Disk II 5.25 Drive Interface Card  - Slot C6

install = Apple //e @ (bottom of screen)

All three together I get the error text on screen.

 

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Hessen wrote:Timelord wrote
Hessen wrote:
Timelord wrote:
Hessen wrote:
Timelord wrote:

It is dropping to the ROM Monitor. Pull every IO card entirely, so that every slot is empty, and tell us if it goes to BASIC. 

Yes it does. What should the next step be?

 

Please list all of the peripheral cards that you have in the system. Personally, I would install them one at a time, power on, and see at what point it drops to the system monitor. This recently happened (for me) using a 3.5 Drive Card on a non-enhanced //e, and likewise, on a ROM 0 //gs mainboard. 

 

I have been unable to determine why the 'upgrade' version of the //gs mainboard is doing this. 

 

I am going to bet on a Disk ][ or Apple I/O controller being the culprit, but it would be best to check, and to list all of the cards that you are using, and their slot locations.

Here are the peripheral cards :

1. Super Serial Card - Slot C1

install = Apple //e prompt

2. Memory IIe card - Auxillary Connector Slot.

install = Apple //e prompt

3. Disk II 5.25 Drive Interface Card  - Slot C6

install = Apple //e @ (bottom of screen)

All three together I get the error text on screen.

 

I suppose you missed where I said to test them one at a time. Does it do this with the Disk ][ card alone, and if so, does it occur only when you read diskettes, or is it immediate?

 

If not immediate, see if you can boot it with only that one card installed. Please also confirm that it is a Disk ][ card with two pin headers on it, if it is an Apple brand card, or if it is either an off-brand card, or the later I/O card for the DuoDisk/UniDisk 5.25. 

 

With the Disk ][ card installed, the //e logo should be at the TOP of the screen. Please photograph what is happening with it installed. 

 

I would also like to see a test with the RAM card + Disk ][ card, if the Disk ][ card alone has no issues. 

 

I suspect that the DIsk ][ card is bad, if it drops to monitor as soon as that card is used. IDK what disks you have on hand that you are testing. 

 

I have also seen this occur when the analogue card in the DIsk ][ is bad. I have some technical docs to narrow down the ICs involved, once we reach a point of eliminating other issues. 

 

 

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Timelord wrote:Hessen wrote
Timelord wrote:
Hessen wrote:
Timelord wrote:
Hessen wrote:
Timelord wrote:

It is dropping to the ROM Monitor. Pull every IO card entirely, so that every slot is empty, and tell us if it goes to BASIC. 

Yes it does. What should the next step be?

 

Please list all of the peripheral cards that you have in the system. Personally, I would install them one at a time, power on, and see at what point it drops to the system monitor. This recently happened (for me) using a 3.5 Drive Card on a non-enhanced //e, and likewise, on a ROM 0 //gs mainboard. 

 

I have been unable to determine why the 'upgrade' version of the //gs mainboard is doing this. 

 

I am going to bet on a Disk ][ or Apple I/O controller being the culprit, but it would be best to check, and to list all of the cards that you are using, and their slot locations.

Here are the peripheral cards :

1. Super Serial Card - Slot C1

install = Apple //e prompt

2. Memory IIe card - Auxillary Connector Slot.

install = Apple //e prompt

3. Disk II 5.25 Drive Interface Card  - Slot C6

install = Apple //e @ (bottom of screen)

All three together I get the error text on screen.

 

I suppose you missed where I said to test them one at a time. Does it do this with the Disk ][ card alone, and if so, does it occur only when you read diskettes, or is it immediate?

 

If not immediate, see if you can boot it with only that one card installed. Please also confirm that it is a Disk ][ card with two pin headers on it, if it is an Apple brand card, or if it is either an off-brand card, or the later I/O card for the DuoDisk/UniDisk 5.25. 

 

With the Disk ][ card installed, the //e logo should be at the TOP of the screen. Please photograph what is happening with it installed. 

 

I would also like to see a test with the RAM card + Disk ][ card, if the Disk ][ card alone has no issues. 

 

I suspect that the DIsk ][ card is bad, if it drops to monitor as soon as that card is used. IDK what disks you have on hand that you are testing. 

 

I have also seen this occur when the analogue card in the DIsk ][ is bad. I have some technical docs to narrow down the ICs involved, once we reach a point of eliminating other issues. 

=================================

1. Only RAM card in slot 

2. Only Disk ][ card inserted into slot 6. (note: This Disk ][ card works in my Apple II+ and in my Apple IIe)

Using 3.3 System Master Floppy = > Screen pops us immediate with the Apple//e at top and the @ at the bottom.

3. I also tried again with a 'working' Apple Disk ][ Card connected to floppy drives from my Apple II+ (image of card I used from my Apple II+) .

 

4. I also tried only putting in a CFFA  3000 card into slot 6 reulting in immediate C7oE -....errors on the screen.

5. Inserted both RAM and Apple Disk ][ Card. = 0102-..Error results

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Did the Disk ][ card alone

Did the Disk ][ card alone produce issues?

 

Have you tried multiple diskettes to load from the Disk ][ controller?

 

It is a very bad idea to lay IO cards on the loic board, like that, while the system is under power.  

 

Ordinarily, you would have a ']' when DOS 3.3 loads, not '@'.  Does that diskette load on your ][+ system?

 

Do any of these issues occur with only the Disk ][ card connected, and no other cards?

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1. The Disk][ card alone

1. The Disk][ card alone produces the "@' at the bottom when installed by itself with any diskette. With the RAM installed with it, then it produces the 0102- error on the display.

2.  I have tried various diskettes, Apple Presents Apple, Prodos, games  and still receive a 0102- error , a 0103- error etc..

3.  The DOS 3.3 loads fine in my ][+ system.

4. The issues of the error text occurs when the Disk ][ is in the slots. The error text issue did also occur with the CFFA 3000 card in slot 6 and 7 as well.

 

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In case of fault can you

In case of fault can you verify the content of the RAM from $0800 with the boot sectors of your disks?

 

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Maybe check the P5 contents

Maybe check the P5 contents on the Disk Card first. If there is no disk in the drive, does PR#6 cause a break to the monitor?

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Hessen wrote:1. The Disk][
Hessen wrote:

1. The Disk][ card alone produces the "@' at the bottom when installed by itself with any diskette. With the RAM installed with it, then it produces the 0102- error on the display.

2.  I have tried various diskettes, Apple Presents Apple, Prodos, games  and still receive a 0102- error , a 0103- error etc..

3.  The DOS 3.3 loads fine in my ][+ system.

4. The issues of the error text occurs when the Disk ][ is in the slots. The error text issue did also occur with the CFFA 3000 card in slot 6 and 7 as well.

 

To verify: Are you using the same, known-good Disk ][ drive mechanism on the //e in these tests, as you used to load DOS 3.3 on the ][+?

 

The next step, that I would take, is to temporarily swap the PSU from the ][+, into the //e. As it is known to be good, this helps to determine if the //e is not getting sufficient voltage/amperage to run the cards, and I have seen that do this sort of thing.

 

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I really appreciate you

I really appreciate you taking time and helping out with this.  I have basic knowledge at best with this. I never had an issue like this and is quite frustrating.

All of myissues I run into are with failty Floppy Disk Drives Analog Cards, but I am guessing this can't be the issue if they work on another computer...

1.I have swapped the Disk ][ drive mechanism (floppy drive and Disk ][ card) from the //e to the ][+ and visa-versa.  All  of the Disk ][ drives  with card work with my ][+ but not with the //e.

2. I did swap out the Power Source Unit from my Apple II+.

Could the issue be the chip Apple ASIC'S 344-0010 IIe MMU ?

 

 

 

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RalfK wrote:In case of fault
RalfK wrote:

In case of fault can you verify the content of the RAM from $0800 with the boot sectors of your disks?

=================

Hi

Thanks for the help.....

But I really do not know how to go about verifying the RAM.

Can you break it down in a more basic way for me to follow?

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jeffmazur wrote:Maybe check
jeffmazur wrote:

Maybe check the P5 contents on the Disk Card first. If there is no disk in the drive, does PR#6 cause a break to the monitor?

======================

 

Hi

Thanks for the help.....

But I really do not know what P5 and PR#6 mean.

Can you break it into more basic steps for me to follow?

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Hessen wrote:I really
Hessen wrote:

I really appreciate you taking time and helping out with this.  I have basic knowledge at best with this. I never had an issue like this and is quite frustrating.

All of myissues I run into are with failty Floppy Disk Drives Analog Cards, but I am guessing this can't be the issue if they work on another computer...

1.I have swapped the Disk ][ drive mechanism (floppy drive and Disk ][ card) from the //e to the ][+ and visa-versa.  All  of the Disk ][ drives  with card work with my ][+ but not with the //e.

2. I did swap out the Power Source Unit from my Apple II+.

Could the issue be the chip Apple ASIC'S 344-0010 IIe MMU ?

 

 

The issue was the same with the ][+ PSU, then? Bleah. That means it is absolutely a fault on the mainboard. 

 

My guess, is that someone pulled or inserted cards while the system was powered, or that it has suffered from ESD or other electrical damage. 

 

Unless you have a supply of Apple ASICs that you can swap in you are probably better-off nabbing another mainboard and using this one for spares. The cost (time, parts, materials) to swap the MMU, IOU, and RAM, after you calculate freight will run you almost as much as a full spare board. 

 

 

 

 

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So the motherboard passes

So the motherboard passes diagnostics and works fine with no cards in the slots. When you place the disk controller in slot 6 it crashes.

 

It looks like you have two drives connected to the card. Try removing disk 2. Then place the card in slot 5 (not 6) and turn on the computer with nothing in the drive. What happens? Does the computer beep? Does the drive motor turn on? Does it crash to the monitor (prints a line starting with an asterisk)? You should also repeat this after moving the disk card to slot 2.

 

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jeffmazur wrote:So the
jeffmazur wrote:

So the motherboard passes diagnostics and works fine with no cards in the slots. When you place the disk controller in slot 6 it crashes.

 

It looks like you have two drives connected to the card. Try removing disk 2. Then place the card in slot 5 (not 6) and turn on the computer with nothing in the drive. What happens? Does the computer beep? Does the drive motor turn on? Does it crash to the monitor (prints a line starting with an asterisk)? You should also repeat this after moving the disk card to slot 2.

 

You're right, I skipped this step, which is used to determine Disk ][ interface card issues with a second drive connected; but it both doesn't explain why his otheer IO card, singly, does the same thing, nor does it seem to be appropriate given that the same cards and drives work on his ][+. 

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jeffmazur wrote:So the
jeffmazur wrote:

So the motherboard passes diagnostics and works fine with no cards in the slots. When you place the disk controller in slot 6 it crashes.

 

It looks like you have two drives connected to the card. Try removing disk 2. Then place the card in slot 5 (not 6) and turn on the computer with nothing in the drive. What happens? Does the computer beep? Does the drive motor turn on? Does it crash to the monitor (prints a line starting with an asterisk)? You should also repeat this after moving the disk card to slot 2.

==================

1. Apple ][ Card in slot 5 (nothing in the drive) = 1 beep, light on, '@' at the bottom of monitor, and no drive motor noise.

2. Apple ][ Card to slot 2 (with nothing in drive) = 1 beep, power light on, nothing on Monitor other than the Apple //e at top. No drive motor noise.

 

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That helps. Normally, I would

That helps. Normally, I would say the disk card is bad, but you say it works in another computer.

So that indicates something on the motherboard associated with the slots is probably bad.

 

Try this (with the card in slot 6:

 

Turn on computer. After you get the at sign, hold the CTRL key and press RESET. That should get you a ] prompt.

Type CALL -151 followed by RETURN key.

At the asterisk prompt, type C600L and return.

Send a screenshot of what you get.

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jeffmazur wrote:That helps.
jeffmazur wrote:

That helps. Normally, I would say the disk card is bad, but you say it works in another computer.

So that indicates something on the motherboard associated with the slots is probably bad.

 

Try this (with the card in slot 6:

 

Turn on computer. After you get the at sign, hold the CTRL key and press RESET. That should get you a ] prompt.

Type CALL -151 followed by RETURN key.

At the asterisk prompt, type C600L and return.

Send a screenshot of what you get.

=====================

 

This is what came up.

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Not right

That doesn't look right. Bit 2 (value 0x4) is stuck at 0. Otherwise the data is ok. When you're sure that the card is working in another Apple, then this looks like an issue with the connection of the I/O data bus and the CPU's data bus. Could be a mechanical issue (card not properly plugged). But you have already tested it in different slots...

The 8bit buffer IC connecting the I/O data bus to the CPU could be the culprit: UB1, 74LS245. Looks like it's no longer driving bit 2 when the CPU accesses the I/O slots. It's a very common and cheap standard device. If you have another machine, then try swapping UB1.

Another possibility is a broken trace: data bus bit "D2" is either broken or shorted to ground.

 

PS: He he he, Jeff also spotted the issue immediately. Sorry to interfere with everyone else's analysis. The issue just looked too tempting. ;-)

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Aha! This is very telling in

Aha! This is very telling in that bit D2 of the data read from the card is stuck LOW.

Again, assuming there is nothing wrong with the card, this would point to one of two issues.

1. The 74LS245 IC at location B2 is bad. First try re-seating the chip and check for bent leg. Otherwise, replace with a known good one.

2. There is a faulty trace on the motherboard between the IC pin 4 and pin 47 of the expansion slots. With the power off, you could check for continuity and/or a short to ground with a simple multimeter.

 

Hope this helps!

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jeffmazur wrote:Aha! This is
jeffmazur wrote:

Aha! This is very telling in that bit D2 of the data read from the card is stuck LOW.

Again, assuming there is nothing wrong with the card, this would point to one of two issues.

1. The 74LS245 IC at location B2 is bad. First try re-seating the chip and check for bent leg. Otherwise, replace with a known good one.

2. There is a faulty trace on the motherboard between the IC pin 4 and pin 47 of the expansion slots. With the power off, you could check for continuity and/or a short to ground with a simple multimeter.

 

Hope this helps!

==============================

Ok.  I ordered some IC's  and should be getting them soon, I'll swap test then.

For testing with multimeter, that's will need to wait. I will need more detailed instructions on how to do that and a visual of where the IC pin and 46 are at.

 

Thanks again.

 

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No problem. I know you're new

No problem. I know you're new to this, but if you feel comfortable at swapping chips, you do have another LS245 on the Serial Card. Just saying....

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Thanks for helping.

Thanks for helping.

I am getting the chip and will test soon.

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Swapping the IC 74S125 from

Swapping the IC 74S125 from my Serial Card worked!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 

Thank you all for helping out!

 

 

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it could be the disk has lost some bits over the years

The

6CB0-A=00 X=FB Y=00 P=37 S=F2

line is a boot failure; it could be the disk has lost some bits over the years, the disk drive (head) needs cleaning, or just as likely, some of the memory in the IIe may have failed. You wouldn't likely expect to get a catalog (file listing) of a commercial game, but CATALOG (for DOS) or CAT (for ProDOS) would work on non-copy-protected disks. RUN A1 would run a BASIC program named A1; BRUN A1 (for DOS) or -A1 (for ProDOS) would run a machine language program.

 

This is a decent listing of commands for use once you get your machine into working shape:

http://myoldmac.net/FAQ/AppleDOS3.3Commands.htm

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