30 Jan
2023
30 Jan
'23
4:32 a.m.
I cam't help you. But let me get this strait. 2 cocos connected with ... a null modem
cable? can send info to one another in basic? What is the corresponding send commamd? Or
was this simply intended to accept data from a cassette recorder? It still seems sending
data coco to coco should't be too hard.
On Monday, January 30, 2023, 01:02:16 AM EST, Jim Brain via cctalk
<cctalk(a)classiccmp.org> wrote:
Over at the CoCo Mailing List, there's a archeological discussion about
the DLOAD BASIC command in older versions of the Color Computer BASIC.
It uses the serial port (and no doubt was designed for computer sharing
in classrooms or similar), but the questions are around how it was
designed and what inspiration is drew from.
I infer MS wrote the code, and the protocol includes:
P.ACK - Acknowledge - C8 hex.
P.ABRT - Abort - BC hex.
P.BLKR - Block request - 97 hex.
P.FILR - File request - 8A hex.
P.NAK - Negative Acknowledge - DE hex.
Does that look like any protocol anyone has seen before?
Jim