2022-10-27 06:17:25 <olle        > Any forth fun facts today?
2022-10-27 06:17:36 <olle        > I'm going through the gforth manual
2022-10-27 06:18:38 <boru        > Forth is a programming language.
2022-10-27 06:20:08 <olle        > Invented by x in 19yy
2022-10-27 06:48:36 <eris[m]     > forth has letters
2022-10-27 07:08:02 <olle        > Lots of em
2022-10-27 09:27:42 <KipIngram   > They're nice and shiny letters too.
2022-10-27 09:30:52 <thrig       > color me surprised
2022-10-27 09:34:50 <joe9        > olle: start with Starting Forth instead.
2022-10-27 10:36:02 <olle        > joe9: I think I had a look in those books from forth inc
2022-10-27 13:27:06 <gordonjcp   > olle: there was only one production home computer that shipped with Forth as its "default" language
2022-10-27 13:28:12 <olle        > So there was one? :D
2022-10-27 13:28:19 <gordonjcp   > yup, the Jupiter Ace
2022-10-27 13:28:19 <olle        > Wait, maybe I saw it on yt
2022-10-27 13:28:23 <olle        > Yeah
2022-10-27 13:28:31 <gordonjcp   > I still have most of one, sadly the vacuum-formed plastic case fell apart
2022-10-27 13:28:57 <gordonjcp   > olle: another fun fact, the Motorola 6809 is ridiculously suitable for running Forth on
2022-10-27 13:29:36 <olle        > gordonjcp: That's in C64 too, right?
2022-10-27 13:29:38 <olle        > Before the 68k
2022-10-27 13:29:40 <olle        > Why tho?
2022-10-27 13:29:43 <gordonjcp   > no, that's the 6502
2022-10-27 13:29:53 <gordonjcp   > well, C64 was a 6510 which was a 6502 derivative
2022-10-27 13:30:12 <olle        > Ah!
2022-10-27 13:30:14 <gordonjcp   > olle: the 6809 has two stacks and a bunch of handy addressing modes with various indirects and autoincrements
2022-10-27 13:30:17 <gordonjcp   > so
2022-10-27 13:30:32 <gordonjcp   > in an indirect-thread model you can write NEXT in two opcodes
2022-10-27 13:31:15 <gordonjcp   > you've got two 8-bit accumulators that can be used as a single 16-bit accumulator, and two 16-bit index registers that you can use as your instruction pointer and working register easily
2022-10-27 13:33:51 <olle        > bbl
2022-10-27 14:15:09 <olle        > gordonjcp: you can't do that with other cpus?
2022-10-27 14:15:15 <olle        > Or maybe you talk about that era?
2022-10-27 14:43:53 <gordonjcp   > olle: you can, but that's probably the best 8-bit chip for Forth
2022-10-27 14:44:26 <gordonjcp   > olle: I ported Forth to a mid-1980s sampler that uses a 6809 to help me write a diagnostics disk for it
2022-10-27 14:44:38 <gordonjcp   > also because it was really funny
2022-10-27 14:51:35 <olle        > kk :)
2022-10-27 14:51:59 <olle        > I'm been watching some more C64 demos and news on yt lately, crazy how much people still product to that machine :O
2022-10-27 14:52:14 <olle        > Might steal my brother's Amiga 500 over Christmas and try out Forth on it
2022-10-27 15:52:47 <MrMobius    > Best 8bit chip was 6309 which is a superset of 6809
2022-10-27 15:54:13 <MrMobius    > re 6502, I get about 30-40x slower performance with the token based forth I'm working on compared to assembly. Subroutine threaded is fastest and 10-20x slower than assembly
2022-10-27 16:22:05 <gordonjcp   > MrMobius: I have a bunch of scrap boards with 6309s on them at work
2022-10-27 16:22:35 <gordonjcp   > MrMobius: they came out of some emergency service dispatcher system, that pre-dates the stuff that got replaced by the stuff we have now which we're trying to replace
2022-10-27 16:23:04 <gordonjcp   > I believe there are some 68000 boards too
2022-10-27 16:23:19 <gordonjcp   > they all have UARTs, some space for EPROMs, and some SRAMs
2022-10-27 17:59:54 <KipIngram   > Oh, nice.  68K was a nice chip.
2022-10-27 18:04:00 <thrig       > some crazy folks are still supporting 88K
2022-10-27 18:25:51 <MrMobius    > gordonjcp: cool? socketed?