zben@umcp-cs.UUCP (10/04/83)
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@pesnta.UUCP (10/15/83)
I vaguely recall hearing somewhere about the ability to download code into an HP2645A terminal. (I believe it has an 8080 or similar uC in it.) Has anyone every tried this or know any details? Marc Pucci (mhtsa!mh3bs!marc)
@pesnta.UUCP (10/15/83)
#R:mh3bs:-33400:whuxlb:400015:000:502 whuxlb!mkg Sep 27 22:12:00 1983 The HP2645 does have an 8080 inside and has an escape sequence that puts you into a loader program so you can download programs. A HP FE said it was for running diagnostics. I have played a pong game on a 2645 with tape drives. It used the line drawing character set and was quite reasonable (you could put quite a bit of english on the "ball"). Unfortunately, we never could figure out how to download the program from a host so tape drives were a must. Marsh Gosnell BTL Whippany whuxlb!mkg
@pesnta.UUCP (10/15/83)
This is not intended to be a complete tutorial on downloading code into an HP2645 terminal. Nor am I writing this in a professional capacity(necessary disclaimer). But, here are a few things that I have learned. The escape sequences for dealing with the micro-p inside the HP2645 all start with <esc>&c <16-bit octal number>a sets the address for the next transaction <8-bit octal number>d deposits a byte at the current address. E transfers program counter to current address As always, the last (and only the last) character in the escape sequence should be a capital letter. There are other commands but I have forgotten them. There are also sequences for 262x terminals. A short (and useless) example follows. As always <esc> means character 27(033)! <esc>&c170360a311d000d000d000d212d117d123d234d145d167d201d320d000d000D <esc>&c170366aE Happy hunting! PS. If enough interest is shown, I might be able to dig up my HP2645 games(road race, cat&mouse, space invaders). I didn't write these, they have been floating around for ages. -- Jim Davis (James W Davis) ...!ucbvax!hplabs!davis davis.HP-Labs@Rand-Relay ----------------------------------------------------------------
@pesnta.UUCP (10/15/83)
terested...