4mb STFM with accelerator - was there an equivalent way back when?

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PeteW
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4mb STFM with accelerator - was there an equivalent way back when?

Post by PeteW » Fri Sep 07, 2018 7:48 pm

Just wondering. My STFM now runs 4mb and will soon have the 16mhz accelerator. If I can ever find one, maybe I'll add a blitter too.

With all that, was there an equivalent Atari machine back then with a similar spec (a Mega 4 or something), or have I just created a retro/modern Frankenstein? :lol:

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Re: 4mb STFM with accelerator - was there an equivalent way back when?

Post by exxos » Fri Sep 07, 2018 7:58 pm

There was a few boosters back in the day... PAK20/30 , T28 etc.


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PeteW
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Re: 4mb STFM with accelerator - was there an equivalent way back when?

Post by PeteW » Fri Sep 07, 2018 8:02 pm

I was more just idly wondering how a slightly faster, 4mb STFM maybe with a blitter would have differed from a Mega ST back then? Apart from the case...

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arf
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Re: 4mb STFM with accelerator - was there an equivalent way back when?

Post by arf » Fri Sep 07, 2018 8:07 pm

PeteW wrote:
Fri Sep 07, 2018 8:02 pm
I was more just idly wondering how a slightly faster, 4mb STFM maybe with a blitter would have differed from a Mega ST back then? Apart from the case...
The MegaST ran at the same speed than the 1040ST(E/F/FM). The only advantages, besides the case, were the internal expansion port and the blitter, which gave only modest speed improvements. Ah, and the battery-back-up RTC.

The MegaSTE ran at 16 MHz CPU, 16 KB L2-Cache and a 8 MHz Bus. Depending on your accelerator and the code it’s executing, that may be faster, or not.
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Re: 4mb STFM with accelerator - was there an equivalent way back when?

Post by exxos » Fri Sep 07, 2018 8:08 pm

PeteW wrote:
Fri Sep 07, 2018 8:02 pm
I was more just idly wondering how a slightly faster, 4mb STFM maybe with a blitter would have differed from a Mega ST back then? Apart from the case...
The MEGA ST *is* a STFM re-cased, basically.
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PeteW
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Re: 4mb STFM with accelerator - was there an equivalent way back when?

Post by PeteW » Fri Sep 07, 2018 8:12 pm

Wow so they really did just put it in a new case and charge more because the case made it more 'serious?

I assumed it would have had one or two more tricks up its sleeve!

Good to know :)

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Re: 4mb STFM with accelerator - was there an equivalent way back when?

Post by mrbombermillzy » Fri Sep 07, 2018 9:16 pm

Also, the Mega ST has *slightly* different clock speed to the other ST's. And by the sound of it, noisier signals (blitter patch) compared to the others.

But, yeah, basically the same.

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Re: 4mb STFM with accelerator - was there an equivalent way back when?

Post by KyleB » Sat Sep 08, 2018 12:41 am

Having the different case meant a lot.

Remember, this was in times of SM124 monitor, that has no stand. That and an STFM together on a desk isn't easy to deal with, I mean, even if you have books to rise the monitor up you still have to give space for the cables hanging out the back of your extra deep "keyboard".

Better the computer completely vanishes under the footprint of the screen. You get an expansion slot and a really nice keyboard too. That's worth it to me.

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Re: 4mb STFM with accelerator - was there an equivalent way back when?

Post by arf » Sat Sep 08, 2018 8:08 am

KyleB wrote:
Sat Sep 08, 2018 12:41 am
Having the different case meant a lot.

Remember, this was in times of SM124 monitor, that has no stand. That and an STFM together on a desk isn't easy to deal with, I mean, even if you have books to rise the monitor up you still have to give space for the cables hanging out the back of your extra deep "keyboard".

Better the computer completely vanishes under the footprint of the screen. You get an expansion slot and a really nice keyboard too. That's worth it to me.
That is indeed nice – for my 1040STF a friend of the family constructed me a wooden U-shaped (but turned 180°) stand for the SM124, where the 1040 could be moved under. But that case improvement isn’t much for ~2 years development time of Atari, right? I mean, the only "hard" thing to advance from 1040 to MegaST was the blitter. The Mega Bus isn’t a sophisticated thing.
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Re: 4mb STFM with accelerator - was there an equivalent way back when?

Post by Petari » Sat Sep 08, 2018 8:33 am

Mega ST was intended for professional users in first place. Separated case and keyboard is big advantage, and there is space for expansions.
And no RF modulator, color encoder - so works only with monitors and rare TVs (then) with RGB input.
Later STFMs had blitter too - but not all. Some people made simplest acceleration: faster (16 MHz) CPU, what gave some 15%-20% speed impr. with ST RAM. More with possible Fast RAM .
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