In SX Microcontrollers, SX/B Compiler and SX-Key Tool, lmolter wrote:

Ah, Javelin... Unfortunately, something is amiss with my Javelin stamp - either the chip itself won't POR, or there's something wrong with the Super Carrier.  The problem is that the IDE can't detect the stamp 80% of the time. I have to unplug and plug in the power connector to the board a dozen times before the IDE detects the chip.  This became so much of a nuisance (sp?) that I decided to venture into the realm of PIC/SX chips.  Because there are soooo many varieties of PIC, I chose the SX for my needs.  I have a few projects in mind that need some brains, and if I go into limited production, the low-volume prices of the Basic and Javelin stamps are prohibitive.  And besides, if I blow the SX, it's only $2 to replace it.  And... I was a Z80 programmer for many years ( a long, long time ago) and the assembly language programming of the SX brought back mostly fond memories.  Ok, I'm rambling...

I did get the Emic to say something intelligible with Javelin, but remember, that stamp has a virtual UART built in.  Very handy and easy to use.  I chose SX/B for this project because: 1) I didn't want to write a UART in SASM; and 2) I thought the SEROUT command would work similarly.  Perhaps it does.  There is a burst of pulses on the SIN line at intervals of 1 second as I designed.  Are they 2400 baud? I hope so.  Are they within published tolerances? I hope so.  FWIW, it did talk briefly, although it spoke assembler language to me: "Right-bracket SAY equals (and a kind of burp sound)".  Looks like my pointer to the supposed string was pointing somewhere's else.  After debugging and verifying that I was feeding the SEROUT command the proper byte sequences, the Emic decided to shut up.  No matter what I try now, it stays silent (except that the PC speaker does a 'bmp' sound initially). I've attached my program for all to see (be gentle, I'm a newbie).

Thanks for listening,

Larry

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