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Another Prototype Lisa Card

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compu_85:
Do we know what software was used with these cards? I assume it's not the normal LisaTest?

-J

rayarachelian:

--- Quote from: compu_85 on July 08, 2020, 02:26:45 pm ---I ended up getting the parallel port card... amazingly the seller took best offers.

I hope whoever gets the floppies is able to make images, and shares them with the rest of the class...

I was able to pick up the IO Port Test card too... which has its rom present. I'll back it up as soon as I can.

Do we know where the flying clip leads hook up?

I've been wanting one of the test cards for some time, and within a week I've gotten two of them :o

The seller also had a loopback plug for the serial ports. That's still in the mail, I'll post pictures once it arrives. This was the listing: https://www.ebay.com/itm/VINTAGE-APPLE-COMPUTERS-1982-SERIAL-PORT-TEST-CARD-SK1406-00-APPLE-ENGINEER/293628746220

High res picture of the cards: https://i.imgur.com/LYntDsn.jpg


--- End quote ---

I think I remember back when I first started on LisaEm that I disassembled the code around the test loopback cable, it basically wants to link the xmit on port a to rcv on port b and vice versa, or perhaps within each port, don't recall, i.e. xmit on port a went to receive on port a, xmit on port b went to receive on port b, not sure about the hardware handshaking wires. Wasn't much of a complex thing at all. I can look at the LisaEm code if anyone's curious about it.

Edit: yeah, it should be sending data from port a to port b and vice versa:


--- Code: ---void write_serial_port_loopbackplug(unsigned int port, char data) {DEBUG_LOG(0,"wrote %02x to port %d",data,port); fliflo_buff_add(&SCC_READ[(!port)&1],data & scc_bits_per_char_mask[(!port)&1]);}

--- End code ---

The photos I see in the ebay listing. however, seem to loop from port A to port A, and from port B to port B - that is pins 2,3 are connected to each other.

compu_85:
Here are the pictures of the serial test plug. Interestingly, port A has more pins looped back than port B.

compu_85:
Here is the dump from the 2716 on the test card.

There's this string at the end: AWAITING APPLE INPUT Rev 1.1

compu_85:
It appears to be bootable, though it fails with an error 93 when I try it in my 2/10 and 2/5.

One interesting tidbit: The system turns on as soon as power is applied when the card is installed.

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