DLV11-J (M8043) clone?

[jmdhuse]

Hello All,

I got my hands on what looks like a clone of the M8043 quad serial channel module. It is manufactured by "Technical Magic Inc." and uses the same IM6042 UARTs as the actual M8043 board. Unfortunately, I cannot find any documentation about the many jumper options and so I don't know how to configure or test it. Does anyone have any information about this board?

Thanks, Jon.

Here's a snapshot:

 

[Bitly]

Take all this with a grain of salt, it's all pure speculation.....

The single row jumpers are either modem/null-modem configurations, OR to short RTS/CTS and DTR/DSR to disable hardware handshaking.

The next ones down appear to set RS-232 format, I can see a bit of silkscreen '7B' and '1S' (for seven bits, 1 stop) remaining silkscreen should be obvious.

The block labelled BAUD selects between two different speeds for each of the 4 6402s.

The AMP switch sets the clock divider, my guess being the one of the Harris PROMs (32x8?) directly below contain the waveforms, and the switch selects one of the data bits for output. Four switches, so each switch controls the clock for one 6402, with 10 possible baud rates selected from the 'standard' ones.

The vector block is below the 512x8 PROM sets the interrupt vector.

The address block sets bits 5-12 of the address, and the left-most jumper is 'SC7-CON', whatever that means.

Again, pure speculation.......

CW

 

[jmdhuse]

Take all this with a grain of salt, it's all pure speculation.....

The single row jumpers are either modem/null-modem configurations, OR to short RTS/CTS and DTR/DSR to disable hardware handshaking.

The next ones down appear to set RS-232 format, I can see a bit of silkscreen '7B' and '1S' (for seven bits, 1 stop) remaining silkscreen should be obvious.

The block labelled BAUD selects between two different speeds for each of the 4 6402s.

The AMP switch sets the clock divider, my guess being the one of the Harris PROMs (32x8?) directly below contain the waveforms, and the switch selects one of the data bits for output. Four switches, so each switch controls the clock for one 6402, with 10 possible baud rates selected from the 'standard' ones.

The vector block is below the 512x8 PROM sets the interrupt vector.

The address block sets bits 5-12 of the address, and the left-most jumper is 'SC7-CON', whatever that means.

Again, pure speculation.......

CW

I think if I spend some time with a ohm-meter I can trace things out and get the features documented... thanks!

 

[jmdhuse]

I think if I spend some time with a ohm-meter I can trace things out and get the features documented... thanks!

I did spend a couple of hours with the ohm-meter and a scope and I now know what is what... If anyone has this board and needs the info, let me know and I'll gladly send it along. Cheers, Jon.

 

[1944GPW]

I did spend a couple of hours with the ohm-meter and a scope and I now know what is what... If anyone has this board and needs the info, let me know and I'll gladly send it along. Cheers, Jon.

That is great news. May I suggest typing up your notes in a one page text file and placing it on archive.org for future reference?

 

[wa2flq]

Of all the variants of DLV11-J, the layout and labeling of this device is pretty clear. Using IC type sockets however would seem to be a challenge. Looks like Mouser has the shorting links at *cough* $0.20 each.

If you've sorted the addressing or serial options, why don't you post that bit here. "Where there's one there's another"

Jerry

 

[jmdhuse]

Of all the variants of DLV11-J, the layout and labeling of this device is pretty clear. Using IC type sockets however would seem to be a challenge. Looks like Mouser has the shorting links at *cough* $0.20 each.

If you've sorted the addressing or serial options, why don't you post that bit here. "Where there's one there's another"

Jerry

I will write up something that is clear and post it here, as well as place the info on archive.org, as suggested by 1944GPW... Thanks!