Search found 17 matches

by ctirad
Thu Oct 22, 2020 2:02 pm
Forum: H5 Phoenix Platform Edition
Topic: 32.084988MHZ oscillator shortages
Replies: 27
Views: 1861

Re: 32.084988MHZ oscillator shortages

Mine were 5V ones in DIL package, programmed by distributor http://www.spezial.cz/ (pages in czech, german and polish languages). But that was about 20 years ago.
by ctirad
Thu Oct 22, 2020 11:49 am
Forum: CHAT FORUM
Topic: Chineese Xilinx programmer.
Replies: 38
Views: 2472

Re: Chineese Xilinx programmer.

Interesting. Could you please write some more details about your toolchain?
by ctirad
Thu Oct 22, 2020 11:37 am
Forum: H5 Phoenix Platform Edition
Topic: 32.084988MHZ oscillator shortages
Replies: 27
Views: 1861

Re: 32.084988MHZ oscillator shortages

I used to use programmable oscillators from Epson for as clock base for 44.1Khz for Falcon. https://www5.epsondevice.com/en/product ... tor/#sub03
by ctirad
Sun Oct 04, 2020 11:41 pm
Forum: HARDWARE DISCUSSIONS
Topic: Alt-RAM logic brain fart
Replies: 37
Views: 2845

Re: Alt-RAM logic brain fart

Let's think. If I routed all the data and address lines via the CPLD I wouldn't need level shifting, but that'd need around 114 pins! Routeing address only would need around 50 (give or take), then only level shifters for the data lines. That sounds doable, and is, I suspect, what the TF536 does. I...
by ctirad
Sun Oct 04, 2020 8:57 pm
Forum: HARDWARE DISCUSSIONS
Topic: Alt-RAM logic brain fart
Replies: 37
Views: 2845

Re: Alt-RAM logic brain fart

* More memory. This was the main aim of this project. Memory, and lots of it. DRAM is the only real option here. This will again need 3.3V infrastructure and probably a bigger CPLD. I'd use SDRAM. You can get 128MB or more for cheap. Directly soldered. The controller should fit into something like ...
by ctirad
Sun Oct 04, 2020 8:24 pm
Forum: CHAT FORUM
Topic: Chineese Xilinx programmer.
Replies: 38
Views: 2472

Re: Chineese Xilinx programmer.

I'm using almost the same one (DLC9 without "LP") for years using Linux + ISE Impact.
by ctirad
Fri Oct 02, 2020 8:36 pm
Forum: MEMBER BLOGS
Topic: UbiSoft MV16
Replies: 47
Views: 5898

Re: UbiSoft MV16

Do you still have one for sale? I'd like to have one.
by ctirad
Fri Oct 02, 2020 8:25 pm
Forum: TF536
Topic: Ram choices for TF536
Replies: 17
Views: 2191

Re: Ram choices for TF536

You was right. The problem was probably either in my Mega ST4 or 192k emutos. After putting the card into other machine it started to work. And thanks to last FW update I have full 128MB of FastRAM. 8-)
by ctirad
Sat Sep 26, 2020 10:10 pm
Forum: TF536
Topic: Ram choices for TF536
Replies: 17
Views: 2191

Re: Ram choices for TF536

PhilC wrote:
Thu Jul 16, 2020 8:55 pm
Tested chips for 128mb version.
Alliance Memory AS4C32M16SA-7TCN Tested working to 64mb
I accidentally installed two sets of AS4C32M16SB-6TIN. No success :(
Any chance to get it working by updating CPLD firmware?
by ctirad
Mon Aug 31, 2020 10:59 am
Forum: FPGA DEVELOPMENT
Topic: ST/E DMA recreation (still collecting info)
Replies: 1
Views: 393

ST/E DMA recreation (still collecting info)

I'd like to reimplement Atari ST/E DMA chip. I'm going to try a small ARM MCU first, because it appears to be a most cost efectiove solution (a single 5V/5V tolerant chip design, internal FIFO). Otherwise a small FPGA (Lattice ICE40 will be used instead). In present time I'm trying to collect as muc...

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