Search found 184 matches

by litwr
Mon May 01, 2017 7:04 pm
Forum: hardware
Topic: Have Acorn Archimedes? Please run it for me!
Replies: 33
Views: 2144

Re: Have Acorn Archimedes? Please run it for me!

steve3000 wrote:Results from my A440/1 with ARM2 (8MHz) and MEMC1a running RISC OS 3.11, in MODE 0.

Thank you for these results - the tables are updated. :D
by litwr
Sun Apr 30, 2017 11:33 am
Forum: hardware
Topic: Have Acorn Archimedes? Please run it for me!
Replies: 33
Views: 2144

Re: Have Acorn Archimedes? Please run it for me!

It's 24% faster per CPU clock , I think. You can see from the posts upthread that the timings are approx 13 seconds and 31 seconds. Thanks, it is my point. At 1st between ARM3 and ARM250 (24%) and then between the eval system and an ARM 250 where it's 7% and not 24 % ? Where is the logic in this wa...
by litwr
Sun Apr 30, 2017 9:24 am
Forum: hardware
Topic: Have Acorn Archimedes? Please run it for me!
Replies: 33
Views: 2144

Re: Have Acorn Archimedes? Please run it for me!

[SNIP] It is interesting that ARM3 in A4 shows appreciably better (≈24%) performance than ARM250 at A3020. It is too much, I have no idea how to explain this. I continue to wait for ARM2 results. ;) ARM3 has cache and runs at 24 Mhz ... I'm surprised it runs ONLY 24% faster. No, A4 is 31.05/12.73 ≈...
by litwr
Sun Apr 30, 2017 6:43 am
Forum: hardware
Topic: Have Acorn Archimedes? Please run it for me!
Replies: 33
Views: 2144

Re: Have Acorn Archimedes? Please run it for me!

We can't run `pi1' and `pi' - these codes are called from Basic programs `pi-bas' and `pi1-bas' respectively. Basic programs are called from obey scripts but may be used directly.
EDIT. The obey scripts assure more the correctness of the current directory.
by litwr
Sun Apr 30, 2017 6:35 am
Forum: hardware
Topic: Have Acorn Archimedes? Please run it for me!
Replies: 33
Views: 2144

Re: Have Acorn Archimedes? Please run it for me!

A lot of thanks for the help. :) The tables are updated. However I doubt in the results for A3020. I can't believe that `pi' and `pi1' have the same speed. The archive contains two obey scripts `pi-mla' and `pi-no-mla'. Are they tried? The type for `pi-bas' and `pi1-bas' is set to `ffb' - it looks c...
by litwr
Fri Apr 28, 2017 7:27 pm
Forum: hardware
Topic: Have Acorn Archimedes? Please run it for me!
Replies: 33
Views: 2144

Re: Have Acorn Archimedes? Please run it for me!

So I was in error. Maybe ARM2 is even more rare... I met the genuine Acorn Archimedes only once in 1991. I was shocked, it was too good to be reality. :)
by litwr
Fri Apr 28, 2017 7:02 pm
Forum: hardware
Topic: Have Acorn Archimedes? Please run it for me!
Replies: 33
Views: 2144

Re: Have Acorn Archimedes? Please run it for me!

danielj wrote:I shall try it on ARM250 later this evening! :)

d.

Wow! IMHO ARM250 is a rare species. Thanks! :)
by litwr
Fri Apr 28, 2017 6:42 pm
Forum: hardware
Topic: Have Acorn Archimedes? Please run it for me!
Replies: 33
Views: 2144

Re: Have Acorn Archimedes? Please run it for me!

Bump! The request is still actual. Maybe someone could help a bit? Please... BTW I continue to test my Raspberry Pi under RiscOS with BBC Micro software. I have run ClockSP and got combined average 7914.89 MHz - it is more than 11 times bigger than the actual frequency of Pi. :o I ran also Mandelbro...
by litwr
Sun Mar 19, 2017 5:14 pm
Forum: hardware
Topic: Have Acorn Archimedes? Please run it for me!
Replies: 33
Views: 2144

Have Acorn Archimedes? Please run it for me!

I continue to gather data for my pi-spigot project . I have just made two programs for Acorn Archimedes. Two programs instead of one are caused by the intrigue question. What is faster a single MLA instruction or four general data processing instructions? Please help with genuine ARM2 or ARM250 base...
by litwr
Sun Mar 19, 2017 9:57 am
Forum: software
Topic: Several lamer's questions
Replies: 6
Views: 696

Re: Several lamer's questions

Thanks. :) However I can think that I have found a bit shorter way.
Obey script:

Code: Select all

<obey$dir>.prog

I had to add <obey$dir> prefix. A script doesn't work with GUI without it for me.
Basic line:

Code: Select all

OSCLI "LOAD <obey$dir>.PROGNAME "+STR$~ADDR
by litwr
Sun Mar 19, 2017 8:08 am
Forum: software
Topic: Several lamer's questions
Replies: 6
Views: 696

Re: Several lamer's questions

I have another question for Basic. I want to load a ML program. I use

Code: Select all

OSCLI "LOAD PROGNAME "+STR$~ADDR
.
This doesn't work with GUI. I should add a path (folder) of PROGNAME before PROGNAME. How to get this path? Are there other ways?
by litwr
Sun Mar 19, 2017 5:59 am
Forum: software
Topic: Several lamer's questions
Replies: 6
Views: 696

Re: Several lamer's questions

More thanks for the detailed help. :) However the purpose of *DEBUG still misses me. I called it from BASIC and got DEBUG* prompt. I can't catch the difference between it and the standard *-prompt.
by litwr
Sat Mar 18, 2017 8:40 pm
Forum: software
Topic: Several lamer's questions
Replies: 6
Views: 696

Several lamer's questions

1. Is there ways to make Archimedes of the 80s faster? To stop video or something else? Some magic Basic commands?
2. What does DEBUG-command make? I tried it with command line and got a prompt changed from * to DEBUG*. Any details or links?
A lot of thanks in advance. :)
by litwr
Sat Mar 18, 2017 8:28 pm
Forum: emulators
Topic: Arculator on Linux?
Replies: 100
Views: 7385

Re: Arculator on Linux?

I am using version 3.11. 3.00 doesn't work with Arc-em for me, it gives the blank screen. Is there a way to set up a proper configuration for floppies?
by litwr
Sat Mar 18, 2017 4:21 pm
Forum: emulators
Topic: Arculator on Linux?
Replies: 100
Views: 7385

Re: Arculator on Linux?

Thanks for support. :) It looks like I had made something wrong with sources. I downloaded them again, compiled, and things began to work! :) HostFS works too but I still fail with floppy images. They didn't show themselves at GUI panel. :( It is the only HostFS and mysterious :4 drive.
by litwr
Sat Mar 18, 2017 8:23 am
Forum: emulators
Topic: Arculator on Linux?
Replies: 100
Views: 7385

Re: Arculator on Linux?

Thank you very much for the link to documentation. It would be good to have it with the sources. I made my ROM-file by cat IC24.ROM IC25.ROM IC26.rom IC27.ROM >ROM I placed it into a directory with `arcem' file. Then I used micro@my2:~/arcem-src$ ./arcem --memory 4M --processor ARM2 and got the same...
by litwr
Fri Mar 17, 2017 5:45 pm
Forum: emulators
Topic: Arculator on Linux?
Replies: 100
Views: 7385

Re: Arculator on Linux?

The ArcEm works great for me with RISCOS 3.1 and run games about 90% of original speed, so is very playable. Thank you very much for this information. :) So what is wrong with my ArcEm? Is it working with 64-bit Linux? It works with problems with ArthurOS, it can't work with discs. :( I use the nex...
by litwr
Wed Mar 15, 2017 6:38 am
Forum: emulators
Topic: Arculator on Linux?
Replies: 100
Views: 7385

Re: Arculator on Linux?

Is it possible to make the emulation 4-5 times slower? It is too fast now, impossible to use. BTW is there any working Archimedes emulator for Linux? I tried arcem but I could run only ArthurOS with it. :(
by litwr
Fri Mar 10, 2017 12:41 pm
Forum: software: other
Topic: A mathematical demo and the request for help from the hardware owners
Replies: 69
Views: 6782

Re: A mathematical demo and the request for help from the hardware owners

I have just added VAX-11/785 to the list. It is interesting that this very expensive computer (several hundreds thousand bucks?) is slower that 8 MHz PC AT and doesn't have proper hardware division for integers.
by litwr
Sun Mar 05, 2017 7:27 pm
Forum: emulators
Topic: Arculator on Linux?
Replies: 100
Views: 7385

Re: Arculator on Linux?

Thank you. However there are so many clones... The clone for Debian has a bigger 'arm.c' file... I tried Arculator-pending and a Linux branch. It works but with problems. I have made `discs' sub-directory and placed several ADF there. I have also added a line disc_name_0 = discs/Lemmings-1991.adf to...
by litwr
Sun Mar 05, 2017 10:48 am
Forum: emulators
Topic: Arculator on Linux?
Replies: 100
Views: 7385

Re: Arculator on Linux?

Thanks for this fine emulator and its port for Linux. It works with Debian 8.3, but is it possible to attach/detach disk images? How to run games?
by litwr
Fri Feb 17, 2017 4:45 pm
Forum: emulators
Topic: B-EM, BCPL, SBC and the Overflow Flag
Replies: 40
Views: 3578

Re: B-EM, BCPL, SBC and the Overflow Flag

We need an example program for ObjAsm. Examples for AASM did not work for ObjAsm. :( Several other utilities do not work for me too, for example, `du'.
by litwr
Fri Feb 17, 2017 4:41 pm
Forum: software: other
Topic: A mathematical demo and the request for help from the hardware owners
Replies: 69
Views: 6782

Re: A mathematical demo and the request for help from the hardware owners

The results for pi-spigot allow to calculate CPU efficiency for 1 Mhz. The next table contains approximate values of efficiency reciprocals (ER). These values are calculated by multiplication of the time of the calculation of 3000 digits by the effective CPU frequency. ARM1 350 80286 430 80386 440 6...
by litwr
Mon Feb 13, 2017 4:06 pm
Forum: hardware
Topic: have z80 second processor? please run this for me!
Replies: 34
Views: 2871

Re: have z80 second processor? please run this for me!

Thank you very much. Your results confirm that my estimation was almost perfect. 8)
by litwr
Sun Feb 12, 2017 6:56 pm
Forum: hardware
Topic: have z80 second processor? please run this for me!
Replies: 34
Views: 2871

Re: have z80 second processor? please run this for me!

Thank you for this nice review. However it misses benchmarks. :wink: You again showed the results for Acorn 2nd processor Basic program of pipack-15. Pipack-24 should show better speed. BeebEm emulates Acorn Co-Pro much more accurate than Torch Co-Pro. BeebEm is faster for only about 19% for Acorn C...
by litwr
Sun Feb 12, 2017 2:40 pm
Forum: hardware
Topic: have z80 second processor? please run this for me!
Replies: 34
Views: 2871

Re: have z80 second processor? please run this for me!

Thank you! :) The tables are updated. The result table contains 10 entries related to BBC Micro/Master of total 61. There are also 15 entries for Commodore, 9 for IBM PC compatibles, 7 for PDP-11, 4 - Amstrad CPC/PCW, 3 - MSX, ... It looks like that Torch system was the fastest z80 system in the wor...
by litwr
Sun Feb 12, 2017 11:02 am
Forum: hardware
Topic: have z80 second processor? please run this for me!
Replies: 34
Views: 2871

Re: have z80 second processor? please run this for me!

This image is bootable.
by litwr
Sun Feb 12, 2017 10:34 am
Forum: hardware
Topic: have z80 second processor? please run this for me!
Replies: 34
Views: 2871

Re: have z80 second processor? please run this for me!

Okay. The Torch communicator is working, I just have to remember how to get the file onto a cpn disk! d. I can suggest a way. Put a file named `pi-torch.com' (it is at CPM22 folder) to an SSD. Boot Torch and use interactive RWACORN utility from the system distribution. The other way to copy the ent...
by litwr
Sun Feb 12, 2017 7:31 am
Forum: hardware
Topic: have z80 second processor? please run this for me!
Replies: 34
Views: 2871

Re: have z80 second processor? please run this for me!

danielj wrote:I'll dust mine off today and give it a go for you.

d.

Thank you very much! It is a nice surprise. :)
by litwr
Sun Feb 12, 2017 5:02 am
Forum: emulators
Topic: Several possible improvements to B-em
Replies: 3
Views: 628

Several possible improvements to B-em

1) a better support for Control key. I cannot map it to any key by the keyboard re-mapper. :( The temporary map to S key helps but it is very inconvenient. 2) to return to the emulator after the hard reset. Current B-em continues to stay in the menu mode after reset. 3) a toggle key for the full-thr...