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Forum: Programmable Logic Topic: 65020 |
| barrym95838 |
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Posted: Thu Feb 10, 2022 6:53 am
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Replies: 22
Views: 13377
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Thank you so much for sharing, John ... it looks great, but I'm doing my best to not be envious of your productivity in an area of creativity that has been a brutal struggle for me in recent years with my 65m32.  |
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Forum: Programmable Logic Topic: 65020 |
| Sheep64 |
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Posted: Tue Feb 22, 2022 7:36 pm
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Replies: 22
Views: 13377
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| I mentioned 65020 to randyhyde although I was unaware of the similarity to barrym95838's 65m32. Indeed, I had to check that barrym95838 wasn't reporting a significantly re-formulated 65m32. The middle-endian arrangement is extremely clever. For about two days, I considered ... |
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Forum: Forth Topic: Homebrew Forth project - questions thread |
| barrym95838 |
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Posted: Sun Mar 13, 2022 4:56 am
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Replies: 4
Views: 1206
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| ... I don't understand your assembly language example, so I'll just whip out my own foreign example, from my imaginary DTC FORTH for my imaginary 65m32 (a=dTOS, y=IP, x=rSP, s=dSP): ` 168 `-------------------------------------------------------------- dodoes ` 169 dodoes_: ` ( -- a )( R: -- a ... |
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Forum: Forth Topic: Highly optimized 65816 ITC Forth |
| barrym95838 |
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Posted: Mon Mar 14, 2022 7:17 pm
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Replies: 68
Views: 21804
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| ... seems appealing to me when I see the common words like DUP, DROP and NIP turn into a single machine instruction plus NEXT (PHA, PLA, PLY). In my 65m32 DTC FORTH, literally dozens of primitives reduce to a single machine instruction, making optimized STC the proper performance-oriented solution. ... |
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Forum: Programmable Logic Topic: M65C02A Core |
| barrym95838 |
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Posted: Mon Mar 14, 2022 7:46 pm
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Replies: 136
Views: 107883
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| ... with carry (CDC) or negate-and-add (NDD) instruction would obviate the need to swap arguments in some cases. I have plenty of opcode slots in my 65m32, so it will definitely have at least one of those before it's ready for prime-time. "Whimsical" and "late" are integral parts ... |
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Forum: Programmable Logic Topic: 65020 |
| Sheep64 |
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Posted: Tue Mar 22, 2022 11:53 am
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Replies: 22
Views: 13377
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| ... I presume you have many other skills which you practice to a high caliber. Within the scope of 6502 extensions, your recent contribution regarding 65m32, Forth, program stack and data stack is exquisite. I am under the impression that 8/32 bit source compatible 65m32 is snagged on two issues. The ... |
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Forum: General Discussions Topic: The 65M202 road map that could have been |
| GARTHWILSON |
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Posted: Thu Jun 30, 2022 12:21 am
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Replies: 58
Views: 11017
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| ... around a thousand balls in a BGA. One 32-bit quasi-65xx architecture from one of our forum members, Michael Barry, that looks good is his 65m32 . See Ed's " Index of threads for improved 6502 and derived architectures " topic too. |
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