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Groups > comp.lang.forth > #49514
| From | rickman <gnuarm@gmail.com> |
|---|---|
| Newsgroups | comp.lang.forth |
| Subject | Re: Forth coding style vs "Algol et al" coding style |
| Date | 2016-07-25 23:13 -0400 |
| Organization | A noiseless patient Spider |
| Message-ID | <nn6kh3$sa4$1@dont-email.me> (permalink) |
| References | (4 earlier) <nlv1o0$8au$1@dont-email.me> <ea119550-f0a9-4e35-9e2b-4e2a36968101@googlegroups.com> <nm07sh$n94$2@dont-email.me> <9a73adb8-c83b-4ef1-b504-9507239577f3@googlegroups.com> <26ea96b4-07db-4dbe-89f9-935c3e8bae28@googlegroups.com> |
On 7/25/2016 10:56 PM, foxaudioresearch@gmail.com wrote: > On Monday, July 11, 2016 at 1:51:21 PM UTC-4, Mark Wills wrote: >> On Monday, 11 July 2016 14:44:51 UTC+1, rickman wrote: >>> On 7/11/2016 4:59 AM, Mark Wills wrote: >>>> On Monday, 11 July 2016 03:53:53 UTC+1, rickman wrote: >>>>> On 7/10/2016 6:00 PM, Mark Wills wrote: >>>>>> On Sunday, 10 July 2016 16:50:08 UTC+1, foxaudio...@gmail.com wrote: >>>>>>> Sure have Mark. It's very nice. >>>>>>> >>>>>>> I am porting my cross compiler and my variation of camel Forth to Ti99. I always wanted TiForth to hold Tos is a register. >>>>>>> >>>>>>> The cycle count looks like it will be faster. >>>>>>> >>>>>>> >>>>>>> Boy I like that TmS9900 instruction set better than x86. >>>>>>> >>>>>>> Just needs a stack pointer or 2 in Hardware. >>>>>>> >>>>>>> B >>>>>> >>>>>> Yes, the TMS9900 instruction set is by the nicest I've used on any processor >>>>>> over the years. The 68K comes a close second for me :-) >>>>> >>>>> Funny, I still have a couple of TMS99x computers around here somewhere. >>>>> One is a Technico 9900 single board computer that uses EPROMs. Another >>>>> is one I designed using a 9995 built with wire wrap. I wanted to use >>>>> the 9995 to control an IBM Selectric I got at a something-fest, but it >>>>> was too worn out to print reliably. Seems those mechanicals don't last >>>>> forever. Both CPU boards are sitting in my basement next to an old 8008 >>>>> multiple board computer. >>>>> >>>>> -- >>>>> >>>>> Rick C >>>> >>>> The 9995s and (in-particular) the 9900s are getting quite valuable now. The >>>> 9995 is a much simpler chip to work with. IIRC it needs no supporting chippery, >>>> whereas the 9900 at least requires a 4-phase clock. Their register to memory >>>> architecture is beautiful. If only they had a hardware stack! (Later variants >>>> of the 99xx family did indeed have hardware stacks and a whole raft of >>>> additional instructions). >>> >>> Why would you want a hardware stack? That would be limited in size and >>> likely function. The 8008 predecessor to the 8080 has a small hardware >>> stack. >>> >>> Or do you mean a dedicated stack pointer in the chip? >>> >>> -- >>> >>> Rick C >> >> Yes, just a stack pointer, and MOV instructions to get push/pop. >> >> It's fairly simple to anyway. Suppose R0 is your stack pointer register: >> >> LI R0,$E000 - stack is at $E000 >> >> to push data: >> DECT R0 - decrement stack pointer by two (16 bit word i.e. two bytes) >> MOV Rx,*R0 - move some register (Rx) to the memory addressed by R0 >> >> to pop: >> MOV *R0+,Rx - move data at address addressed by R0 to Rx, and increase R0 by two > > I always feel cramped with the single level sub-routine call linked in R11. > (Branch and link) > Although it sucks up way too many cycles on these machines, I created a macros > in Forth assembler that let me have what I want when I need it. > > \ PUSH & POP on both stacks > : PUSH, ( src -- ) SP DECT, *SP MOV, ; > : POP, ( dst -- ) *SP+ SWAP MOV, ; > > : RPUSH, ( src -- ) RP DECT, *RP MOV, ; > : RPOP, ( dst -- ) *RP+ SWAP MOV, ; > > Then I extended branch & link. > > : CALL, ( dst -- ) R11 RPUSH, ( addr) BL, R11 RPOP, ; > > And return remains the same: > : RT *R11 B, ; > > If only it was in hardware... These days a TMS9900 processor could be done in an FPGA and run much faster than the original. It could also look ahead at the instruction sequences you use and do them in a single instruction (even though it would still need to fetch it all to do the lookahead). This could maintain machine code level compatibility and work much faster. -- Rick C
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Forth coding style vs "Algol et al" coding style foxaudioresearch@gmail.com - 2016-07-08 17:44 -0700
Re: Forth coding style vs "Algol et al" coding style "WJ" <w_a_x_man@yahoo.com> - 2016-07-09 04:27 +0000
Re: Forth coding style vs "Algol et al" coding style humptydumpty <ouatubi@gmail.com> - 2016-07-09 10:30 -0700
Re: Forth coding style vs "Algol et al" coding style Julian Fondren <julian.fondren@gmail.com> - 2016-07-09 21:56 -0700
Re: Forth coding style vs "Algol et al" coding style mhx@iae.nl - 2016-07-10 00:30 -0700
Re: Forth coding style vs "Algol et al" coding style mhx@iae.nl - 2016-07-10 00:34 -0700
Re: Forth coding style vs "Algol et al" coding style foxaudioresearch@gmail.com - 2016-07-10 09:10 -0700
Re: Forth coding style vs "Algol et al" coding style endlessboomcapitalism@gmail.com - 2016-07-12 18:55 -0700
Re: Forth coding style vs "Algol et al" coding style Mark Wills <markwills1970@gmail.com> - 2016-07-10 01:39 -0700
Re: Forth coding style vs "Algol et al" coding style foxaudioresearch@gmail.com - 2016-07-10 08:50 -0700
Re: Forth coding style vs "Algol et al" coding style Mark Wills <markwills1970@gmail.com> - 2016-07-10 15:00 -0700
Re: Forth coding style vs "Algol et al" coding style rickman <gnuarm@gmail.com> - 2016-07-10 22:53 -0400
Re: Forth coding style vs "Algol et al" coding style Mark Wills <markwills1970@gmail.com> - 2016-07-11 01:59 -0700
Re: Forth coding style vs "Algol et al" coding style rickman <gnuarm@gmail.com> - 2016-07-11 09:44 -0400
Re: Forth coding style vs "Algol et al" coding style Mark Wills <markwills1970@gmail.com> - 2016-07-11 10:51 -0700
Re: Forth coding style vs "Algol et al" coding style rickman <gnuarm@gmail.com> - 2016-07-11 15:26 -0400
Re: Forth coding style vs "Algol et al" coding style Mark Wills <markwills1970@gmail.com> - 2016-07-12 15:18 -0700
Re: Forth coding style vs "Algol et al" coding style foxaudioresearch@gmail.com - 2016-07-25 19:56 -0700
Re: Forth coding style vs "Algol et al" coding style rickman <gnuarm@gmail.com> - 2016-07-25 23:13 -0400
Re: Forth coding style vs "Algol et al" coding style jim.brakefield@ieee.org - 2016-07-26 07:34 -0700
Re: Forth coding style vs "Algol et al" coding style rickman <gnuarm@gmail.com> - 2016-07-26 11:23 -0400
Re: Forth coding style vs "Algol et al" coding style jim.brakefield@ieee.org - 2016-07-26 13:18 -0700
Re: Forth coding style vs "Algol et al" coding style rickman <gnuarm@gmail.com> - 2016-07-26 18:14 -0400
Re: Forth coding style vs "Algol et al" coding style Mark Wills <markwills1970@gmail.com> - 2016-07-27 02:43 -0700
Re: Forth coding style vs "Algol et al" coding style rickman <gnuarm@gmail.com> - 2016-07-27 10:24 -0400
Re: Forth coding style vs "Algol et al" coding style Mark Wills <markwills1970@gmail.com> - 2016-07-27 02:46 -0700
Re: Forth coding style vs "Algol et al" coding style rickman <gnuarm@gmail.com> - 2016-07-27 10:26 -0400
Re: Forth coding style vs "Algol et al" coding style Mark Wills <markwills1970@gmail.com> - 2016-07-27 02:53 -0700
Re: Forth coding style vs "Algol et al" coding style foxaudioresearch@gmail.com - 2016-07-27 08:32 -0700
Re: Forth coding style vs "Algol et al" coding style foxaudioresearch@gmail.com - 2016-07-27 09:04 -0700
Re: Forth coding style vs "Algol et al" coding style Mark Wills <markwills1970@gmail.com> - 2016-07-28 02:05 -0700
Re: Forth coding style vs "Algol et al" coding style foxaudioresearch@gmail.com - 2016-07-28 06:27 -0700
Re: Forth coding style vs "Algol et al" coding style Mark Wills <markwills1970@gmail.com> - 2016-07-29 03:01 -0700
Re: Forth coding style vs "Algol et al" coding style rickman <gnuarm@gmail.com> - 2016-07-30 02:28 -0400
Re: Forth coding style vs "Algol et al" coding style rickman <gnuarm@gmail.com> - 2016-07-11 13:05 -0400
Re: Forth coding style vs "Algol et al" coding style Mark Wills <markwills1970@gmail.com> - 2016-07-11 10:47 -0700
Re: Forth coding style vs "Algol et al" coding style Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-07-11 08:50 -0500
Re: Forth coding style vs "Algol et al" coding style Michael Barry <barrym95838@yahoo.com> - 2016-07-11 08:23 -0700
Re: Forth coding style vs "Algol et al" coding style Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-07-11 11:48 -0500
Re: Forth coding style vs "Algol et al" coding style Cecil Bayona <cbayona@cbayona.com> - 2016-07-11 12:16 -0500
Re: Forth coding style vs "Algol et al" coding style Mark Wills <markwills1970@gmail.com> - 2016-07-11 10:38 -0700
Re: Forth coding style vs "Algol et al" coding style Cecil Bayona <cbayona@cbayona.com> - 2016-07-11 13:32 -0500
Re: Forth coding style vs "Algol et al" coding style Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-07-11 12:45 -0500
Re: Forth coding style vs "Algol et al" coding style Brad Eckert <hwfwguy@gmail.com> - 2016-07-11 11:49 -0700
Re: Forth coding style vs "Algol et al" coding style Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-07-12 05:02 -0500
Re: Forth coding style vs "Algol et al" coding style Michael Barry <barrym95838@yahoo.com> - 2016-07-11 14:22 -0700
Re: Forth coding style vs "Algol et al" coding style Cecil Bayona <cbayona@cbayona.com> - 2016-07-11 16:31 -0500
Re: Forth coding style vs "Algol et al" coding style rickman <gnuarm@gmail.com> - 2016-07-12 15:31 -0400
Re: Forth coding style vs "Algol et al" coding style lawrencedo99@gmail.com - 2016-07-12 15:55 -0700
Re: Forth coding style vs "Algol et al" coding style rickman <gnuarm@gmail.com> - 2016-07-25 22:48 -0400
Re: Forth coding style vs "Algol et al" coding style lawrencedo99@gmail.com - 2016-08-10 01:54 -0700
Re: Forth coding style vs "Algol et al" coding style rickman <gnuarm@gmail.com> - 2016-08-21 19:32 -0400
Re: Forth coding style vs "Algol et al" coding style lawrencedo99@gmail.com - 2016-08-28 22:55 -0700
Re: Forth coding style vs "Algol et al" coding style hughaguilar96@gmail.com - 2016-08-29 00:34 -0700
Re: Forth coding style vs "Algol et al" coding style Howerd <howerdo@yahoo.co.uk> - 2016-07-11 11:58 -0700
Re: Forth coding style vs "Algol et al" coding style lawrencedo99@gmail.com - 2016-07-12 15:59 -0700
Re: Forth coding style vs "Algol et al" coding style Bernd Paysan <bernd.paysan@gmx.de> - 2016-07-26 00:40 +0000
Re: Forth coding style vs "Algol et al" coding style "Elizabeth D. Rather" <erather@forth.com> - 2016-07-25 21:16 -1000
Re: Forth coding style vs "Algol et al" coding style Bernd Paysan <bernd.paysan@gmx.de> - 2016-08-21 23:04 +0000
Re: Forth coding style vs "Algol et al" coding style Andrew Haley <andrew29@littlepinkcloud.invalid> - 2016-07-26 03:34 -0500
Re: Forth coding style vs "Algol et al" coding style Bernd Paysan <bernd.paysan@gmx.de> - 2016-08-21 23:13 +0000
Re: Forth coding style vs "Algol et al" coding style anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-07-26 16:51 +0000
Re: Forth coding style vs "Algol et al" coding style rickman <gnuarm@gmail.com> - 2016-07-26 13:51 -0400
Re: Forth coding style vs "Algol et al" coding style Bernd Paysan <bernd.paysan@gmx.de> - 2016-08-21 23:38 +0000
Re: Forth coding style vs "Algol et al" coding style anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-08-22 12:51 +0000
Re: Forth coding style vs "Algol et al" coding style rickman <gnuarm@gmail.com> - 2016-07-25 22:50 -0400
Re: Forth coding style vs "Algol et al" coding style Brad Eckert <hwfwguy@gmail.com> - 2016-07-26 16:32 -0700
Re: Forth coding style vs "Algol et al" coding style rickman <gnuarm@gmail.com> - 2016-07-27 10:19 -0400
Re: Forth coding style vs "Algol et al" coding style "Elizabeth D. Rather" <erather@forth.com> - 2016-07-27 09:05 -1000
Re: Forth coding style vs "Algol et al" coding style lawrencedo99@gmail.com - 2016-07-12 15:51 -0700
Re: Forth coding style vs "Algol et al" coding style Mark Wills <markwills1970@gmail.com> - 2016-07-14 03:34 -0700
Re: Forth coding style vs "Algol et al" coding style rickman <gnuarm@gmail.com> - 2016-07-25 22:51 -0400
Re: Forth coding style vs "Algol et al" coding style Mark Wills <markwills1970@gmail.com> - 2016-07-11 01:56 -0700
Re: Forth coding style vs "Algol et al" coding style foxaudioresearch@gmail.com - 2016-07-11 08:03 -0700
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