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Message |
Forum: Programmable logic Topic: 65ISR |
| Hugh Aguilar |
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Posted: Mon Jul 24, 2017 5:18 am
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Replies: 35
Views: 42588
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| ... at least a few people from elsewhere ... I hope that you like it here! I felt at-home almost immediately. Mike B. Thanks Michael :) How is your 65M32 design coming? I was somewhat dubious of designing a 32-bit processor because the ARM Cortex dominates so much --- that is like challenging a ... |
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Forum: Programmable logic Topic: 65ISR |
| barrym95838 |
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Posted: Wed Jul 26, 2017 1:30 am
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Replies: 35
Views: 42588
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| How is your 65M32 design coming? I was somewhat dubious of designing a 32-bit processor because the ARM Cortex dominates so much --- that is like challenging a silverback gorilla to a boxing match --- even processors such as the ... |
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Forum: Programmable logic Topic: 65ISR |
| Hugh Aguilar |
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Posted: Wed Jul 26, 2017 4:11 am
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Replies: 35
Views: 42588
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| How is your 65M32 design coming? I was somewhat dubious of designing a 32-bit processor because the ARM Cortex dominates so much --- that is like challenging a silverback gorilla to a boxing match --- even processors such as the ... |
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Forum: Projects Topic: Introducing the 65m32 |
| barrym95838 |
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Posted: Tue Nov 21, 2017 8:28 am
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Replies: 48
Views: 101312
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| ... it work, but it just would feel a bit too constrained, and I wouldn't be 100% satisfied with the eventual results. Starting now, I'm going to put 65m32 development on hiatus and recycle almost everything I have done so far (many hundreds of hours of thinking and typing, spread over many years) ... |
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Forum: Projects Topic: Introducing the 65m32 |
| BigEd |
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Posted: Tue Nov 21, 2017 9:05 am
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Replies: 48
Views: 101312
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| It'll be interesting to see what happens with that - it's a word width with a history , of course: Computers with 36-bit words included the MIT Lincoln Laboratory TX-2, the IBM 701/704/709/7090/7094, the UNIVAC 1103/1103A/1105, the UNIVAC 1100/2200, the General Electric GE-600/Honeywell 6000, the Di... |
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Forum: Projects Topic: Introducing the 65m32 |
| robfinch |
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Posted: Wed Nov 22, 2017 1:38 pm
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Replies: 48
Views: 101312
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| Itanium has 41 bit instructions packed into 128 bits. I think it's not a bad idea to expand on the number of bits. 32 bit instructions are definitely cramped. I've worked on a couple of machine with 40 bit instructions as a result. 36 bits would probably work well with 9 bit bytes, putting a use to ... |
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Forum: Projects Topic: Introducing the 65m32 |
| barrym95838 |
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Posted: Fri Feb 07, 2020 4:38 am
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Replies: 48
Views: 101312
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| ... so here's the first (and hopefully not last) one for the new decade. The 65m36 is the 36-bit version, and is going to be a direct upgrade to the 65m32a, which is still a 32-bit accumulator-based design like the 65m32, but with some instruction word modifications. The 65m32a instruction word is ... |
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Forum: Projects Topic: Introducing the 65m32 |
| BigEd |
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Posted: Fri Feb 07, 2020 9:18 am
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Replies: 48
Views: 101312
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| Thanks for the update! If weekly is too challenging, monthly should be good. It gives you a chance to realise you need to do something in order to have something to report! |
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Forum: Projects Topic: Introducing the 65m32 |
| Dr Jefyll |
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Posted: Fri Feb 07, 2020 1:29 pm
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Replies: 48
Views: 101312
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Go, Mike, go!  |
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Forum: Projects Topic: Introducing the 65m32 |
| oldben |
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Posted: Sat Feb 08, 2020 9:50 pm
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Replies: 48
Views: 101312
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| I vote for the 65m40. 10 bit byte. I have not looked the 65xxx at all by the 650x cpu is 8 bit data only. 2 more bits will buy you byte,short,unsigned short and long. 3 byte branches would give you ample code space. (19 bits). The stack/pc would be extended to 24 bits. +-9 bits give a good offset fo... |
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Forum: Projects Topic: Introducing the 65m32 |
| barrym95838 |
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Posted: Sun Feb 09, 2020 9:00 am
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Replies: 48
Views: 101312
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| I have stated before that I think 8-bit bytes are too limiting for my taste, but it looks like we're stuck with them for now ... except for those like me who don't mind hopping the curb and driving on the sidewalk from time to time! The only nod to 8-bit bytes in my 65mxx is the "byt" inst... |
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Forum: Projects Topic: Introducing the 65m32 |
| barrym95838 |
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Posted: Fri Feb 14, 2020 5:36 am
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Replies: 48
Views: 101312
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| Work progresses in fits and starts ... I'm still filling in my op-code matrix, which is double the width of the original due to the eight new registers. I'm running into aesthetic issues with my three-letter mnemonics, due to the limitations of a "basic" 26-letter alphabet and my intense d... |
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Forum: Projects Topic: Introducing the 65m32 |
| barrym95838 |
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Posted: Mon Feb 24, 2020 6:23 am
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Replies: 48
Views: 101312
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My concentration and sleep patterns have been disrupted for the last week by awful shoulder pain, but I wanted to share a nice .png Jeff made for me last week. Thanks, Dr. J!
Attachment:
65m36 format.png [ 5.59 KiB | Viewed 7374 times ]
Mike B. |
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Forum: Projects Topic: Introducing the 65m32 |
| BigEd |
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Posted: Mon Feb 24, 2020 9:17 am
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Replies: 48
Views: 101312
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| A picture is worth 1k words! |
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Forum: Projects Topic: Introducing the 65m32 |
| barrym95838 |
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Posted: Mon Mar 02, 2020 7:14 am
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Replies: 48
Views: 101312
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| A picture is worth 1k words! A generous estimate, Ed! Thank you. I still haven't been able to populate my op-code matrix to my satisfaction, but I have settled on register names zyxwusqkjiabcdef (at least for now). My operand format utilizes the operand register (r), address mode (m) and numeric (n... |
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