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Author Topic: Internal memory expansion (Read 53656 times)

Offline Zozosoft

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Re: Internal memory expansion
« Reply #120 on: 2013.December.05. 12:04:07 »
Great news! :ds_icon_cheesygrin:

Offline Saint

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Re: Internal memory expansion
« Reply #121 on: 2013.December.09. 23:28:53 »
Update:

6x1MB units built -- 4 tested OK, waiting for GAL's to test the others.
5x512KB units built -- waiting for GAL's to test.

I'll build up the last 2x1MB units in the next day or so, then we're just waiting on the GAL's!

Offline Saint

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Re: Internal memory expansion
« Reply #122 on: 2014.January.03. 09:47:25 »
Another update... but not a very interesting one! Still waiting for the GALs, I've ordered some more from somewhere else in the hope at least one lot will arrive in the next few weeks!! Very frustrating... I think I'll have to use in-production IC's in the future... :)

Offline Ep128

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Re: Internal memory expansion
« Reply #123 on: 2014.January.26. 00:17:13 »
Quote from: Saint
Still waiting for pcb's and GAL's... :(
Change possibly...? We may live in hopes? :-)

Offline Saint

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Re: Internal memory expansion
« Reply #124 on: 2014.January.26. 00:31:31 »
Still waiting! I expect to have them in the next 2-4 weeks. I will not be using obsolete parts again in the future... has been a complete pain! :)

I've certainly not forgotten about the Enterprise hardware projects, just a frustratingly long wait for components I'm afraid. :(

I've been practicing with the hot air gun and have found a place you can get cheap Mylar paste stencils made up, so I'm getting ready for doing surface mount work. May even build myself a reflow oven and do it properly... :D

Offline Saint

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Re: Internal memory expansion
« Reply #125 on: 2014.January.31. 23:56:29 »
I have 20 GALs now. I will get on and finish the boards in the coming days... :D

Offline Ep128

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Re: Internal memory expansion
« Reply #126 on: 2014.February.01. 00:43:44 »
Quote from: Saint
I have 20 GALs now. I will get on and finish the boards in the coming days... :D
Yeeeeaaah! :-)

Offline Zozosoft

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Re: Internal memory expansion
« Reply #127 on: 2014.February.01. 00:47:33 »
Great news!!! :ds_icon_cheesygrin: :ds_icon_cheesygrin: :ds_icon_cheesygrin:

Unfortunately the HUF got a very bad exchange rates at current days :evil: :cry: :(

Offline Saint

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Re: Internal memory expansion
« Reply #128 on: 2014.February.01. 08:44:58 »

Unfortunately the HUF got a very bad exchange rates at current days :evil: :cry: :(

Oh that is annoying. I had noticed the pound was quite strong at the moment against the dollar. Good for us, not good for you. :(

Offline Saint

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Re: Internal memory expansion
« Reply #129 on: 2014.February.05. 22:47:54 »
Another 2x1MB finished and tested. Remaining 4x512KB finished, waiting for more SRAM (here in a couple of days).

So total ready to ship currently:

1x512KB
6x1MB

The rest I hope to finish this weekend and be ready to post next week! :ds_icon_cheesygrin:

Finally...

Offline Ep128

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Re: Internal memory expansion
« Reply #130 on: 2014.February.06. 00:01:41 »
Quote from: Saint
Another 2x1MB finished and tested. Remaining 4x512KB finished, waiting for more SRAM (here in a couple of days).

So total ready to ship currently:

1x512KB
6x1MB

The rest I hope to finish this weekend and be ready to post next week! :ds_icon_cheesygrin:

Finally...
Thx! :-) Great! :smt041

Offline Zozosoft

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Re: Internal memory expansion
« Reply #131 on: 2014.February.06. 10:13:08 »
Quote from: Saint
The rest I hope to finish this weekend and be ready to post next week! :ds_icon_cheesygrin:
Great! I am looking forward to getting it :-D 10Mhz Z80 needs a fast memory :-)
« Last Edit: 2014.February.06. 12:31:46 by szipucsu »

Offline Z80System

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Re: Internal memory expansion
« Reply #132 on: 2014.February.06. 10:17:03 »
And will you kill all of the original rams from the 10MHz configuration ? Or do you have to kill only the f8-fb modules ?
Z80 System

Offline Zozosoft

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Re: Internal memory expansion
« Reply #133 on: 2014.February.06. 10:58:30 »
Quote from: Z80System
And will you kill all of the original rams from the 10MHz configuration ? Or do you have to kill only the f8-fb modules ?
Onboard 64K (video) RAM used as original, because the Nick control the access timing. Only the internal expansion 64K needed to be replaced.
« Last Edit: 2014.February.08. 11:06:07 by szipucsu »

Offline Saint

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Re: Internal memory expansion
« Reply #134 on: 2014.February.07. 22:26:00 »
All boards built and tested (8x1MB, 5x512KB)! I just need to sort out the connector blocks (they need to be cut to size) and then it's all ready to ship. I'll check the weight and figure out the postage in the next day or so and I'll drop you a message on the final price, Zozo.

Shipping should only take a few days, so you could well have these by the end of next week. :ds_icon_cheesygrin: