DMA ISSUE ON H4
Re: DMA ISSUE ON H4
HDCS was used on the H4... The PCB breaks that line and from FDCS goes via the inverter to the 245 instead.. Its pretty simple.
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
- rubber_jonnie
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Re: DMA ISSUE ON H4
@Icky Awesome, thanks. Inverter is on order so I'll hopefully be able to get this done soon, though I am away for a few days from Sunday, so I may have to wait until the following weekend.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
- rubber_jonnie
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Re: DMA ISSUE ON H4
@exxos Cool thanks, looks like I understood it correctly
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
Re: DMA ISSUE ON H4
Got an email from osh saying the dma fix boards they shipped me are defective and new ones will be shipped soon err.
Tom
Tom
- rubber_jonnie
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Re: DMA ISSUE ON H4
Hoping my inverters will be there when I get home later today. I decided not to order pcbs for the DMA fix in the end, as apart from the inverters I have enough proto board around to make them. I guess we'll see later.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
Re: DMA ISSUE ON H4
:/
Got the patch board from exxos of course, but the 74LVC1G04 isn't in the BOM and I don't have one at hand.
I should've read up on all the threads before ordering the components.
/Troed
Got the patch board from exxos of course, but the 74LVC1G04 isn't in the BOM and I don't have one at hand.
I should've read up on all the threads before ordering the components.
/Troed
Re: DMA ISSUE ON H4
@troed yeah I did the same but it gave me an excuse to order more goodies at the same time as the 04.
If it ain't broke, test it to Destruction.
Re: DMA ISSUE ON H4
Good job you mentioned it...need to add 2x of those to my next order as well...
Re: DMA ISSUE ON H4
Does anybody have a spare fix board by any chance? DoG was able to help me out for the first board but since I'm about to finish another one, I'd like to have a clean install and tought somebody might have an extra. I'll cover the costs (i'm in the UK) but rather not wait for a new batch of pcbs just for 1.
Let me know, thanks.
Let me know, thanks.
Re: DMA ISSUE ON H4
@Robson - I have one with the SMT chip already installed. PM me