Search found 21 matches
- Mon Jul 04, 2022 4:10 pm
- Forum: Hardware
- Topic: Timex 2048 only 16k
- Replies: 49
- Views: 10680
Re: Timex 2048 only 16k
But there is an another issue that I found: I used an normal Zx Spectrum power supply who has 15V output. After the TC2048 running about 4, 5 min the screen begins to flash the colours and changing colours. Then try it with another PU who has exactly 9V, and it works really fine. So, there must be ...
- Mon Jul 04, 2022 12:10 am
- Forum: Hardware
- Topic: Timex 2048 only 16k
- Replies: 49
- Views: 10680
Re: Timex 2048 only 16k
I bought it, and it works very good! :lol: Do you mean that your TC2048 now has 48K of ram? YES!:) But there is an another issue that I found: I used an normal Zx Spectrum power supply who has 15V output. After the TC2048 running about 4, 5 min the screen begins to flash the colours and changing co...
- Mon Jun 27, 2022 6:27 pm
- Forum: Hardware
- Topic: Timex 2048 only 16k
- Replies: 49
- Views: 10680
- Wed Jun 22, 2022 1:34 pm
- Forum: Hardware
- Topic: Timex 2048 only 16k
- Replies: 49
- Views: 10680
Re: Timex 2048 only 16k
I bought by mistake tesla MH84164 DIP16 for the 4264-12 dip18 dram. Then I realize I need dip19!!
Which can substitute the 4264-12 dip18 dram?
IC 4416 I see
Which can substitute the 4264-12 dip18 dram?
IC 4416 I see
- Mon Jun 06, 2022 8:38 pm
- Forum: Hardware
- Topic: Timex 2048 only 16k
- Replies: 49
- Views: 10680
Re: Timex 2048 only 16k
What about Z80SRAM - RAM / CPU module suitable for Sinclair ZX Spectrum 48k here.
Would it work on a TC2048?
Would it work on a TC2048?
- Fri Jun 03, 2022 7:00 pm
- Forum: Hardware
- Topic: Timex 2048 only 16k
- Replies: 49
- Views: 10680
- Thu Jun 02, 2022 7:00 pm
- Forum: Hardware
- Topic: Timex 2048 only 16k
- Replies: 49
- Views: 10680
Re: Timex 2048 only 16k
Thanks mark and sP1d3r!
I am afraid to make something wrong, because my hands shake a bit.
I found in the www a schematic of TC2048 rev.5.1.3.
I am afraid to make something wrong, because my hands shake a bit.
I found in the www a schematic of TC2048 rev.5.1.3.
- Thu Jun 02, 2022 1:57 am
- Forum: Hardware
- Topic: Timex 2048 only 16k
- Replies: 49
- Views: 10680
Re: Timex 2048 only 16k
Mark, I can't find any TMS chip. Where is he?
But I found something that I think could be wrong: Above the U11 dram, the 3 resistors, the last one has another one above it.
But I found something that I think could be wrong: Above the U11 dram, the 3 resistors, the last one has another one above it.
- Tue May 31, 2022 11:49 pm
- Forum: Hardware
- Topic: Timex 2048 only 16k
- Replies: 49
- Views: 10680
Re: Timex 2048 only 16k
Paul, I put the addresses 34000 and 35000.
85 and 255 are ok. 1 and 170 adds 1 value.
Then I repeat with 32768 to 32780, and the value 85 gets 85.
I must made a mistake before, maybe I wrote 80 instead of 85.
85 and 255 are ok. 1 and 170 adds 1 value.
Then I repeat with 32768 to 32780, and the value 85 gets 85.
I must made a mistake before, maybe I wrote 80 instead of 85.
- Tue May 31, 2022 11:02 pm
- Forum: Hardware
- Topic: Timex 2048 only 16k
- Replies: 49
- Views: 10680
Re: Timex 2048 only 16k
Hi Paul. I try it From 32760 to 32767 it's everything ok. But from 32768 to32780 it adds 1 value at 0, 85 and 170. The 255 it's in every memory fine. 32767 it's the last memory of the 16kb, isn't? Yes, 32768 is the first address after 16k. Did I get you right that the results were 1 for 0, 86 for 8...