That's make sense. And yes for a simple cart we don't need it.
Thanks !
Search found 42 matches
- Wed Jul 29, 2020 5:59 pm
- Forum: Dragon Hardware
- Topic: Dragon memory map
- Replies: 9
- Views: 11148
- Fri Jul 24, 2020 7:41 am
- Forum: Dragon Hardware
- Topic: Dragon memory map
- Replies: 9
- Views: 11148
Re: Dragon memory map
Thanks guys ! I'll study this.
- Wed Jul 08, 2020 9:08 am
- Forum: Dragon Hardware
- Topic: Dragon memory map
- Replies: 9
- Views: 11148
Re: Dragon memory map
Thanks !
You confirm that the CoCo cartridge pinout is the same than the Dragon one ?
You confirm that the CoCo cartridge pinout is the same than the Dragon one ?
- Wed Jul 08, 2020 6:44 am
- Forum: Dragon Hardware
- Topic: Dragon memory map
- Replies: 9
- Views: 11148
Re: Dragon memory map
Thanks. $C000-$FEFF make sense, I'll retro-analyze a cartridge pcb to see if the IC are working in this area. But maybe I'm missing something but I don't have any 'R2' signal on my cartridges pinout. Is the Dragon pinout similar to the CoCo one ? I do have a /CTS ("Cartridge select signal") witch is...
- Tue Jul 07, 2020 2:31 pm
- Forum: Dragon Hardware
- Topic: Diagnostic Cartridge
- Replies: 4
- Views: 6983
Re: Diagnostic Cartridge
I have cartridges pcb layout available in EagleCad, I can design a custom version to fit this rom if needed.
- Tue Jul 07, 2020 12:24 pm
- Forum: Dragon Hardware
- Topic: Dragon memory map
- Replies: 9
- Views: 11148
Dragon memory map
Hello there, For learning purposes, I'm working on a custom 2*4k cartridge using standard 2732 eeproms. I have issues finding the exact memory map for the cartridge. In a manual I found a cartridge between $C000 and $FEFF, here it is $C000-$FF00 ("Cartridge ROM or DOS ROM") and also $8000 - $FF00 ("...
- Sun Oct 29, 2017 1:35 pm
- Forum: Dragon General
- Topic: dragon 32 secam psu
- Replies: 13
- Views: 8490
Re: dragon 32 secam psu
Have you tried to follow the continuity of the input signal from the tape connector to the internal components ? Reading the schematics can help you a lot...
- Sun Oct 29, 2017 8:19 am
- Forum: Dragon General
- Topic: dragon 32 secam psu
- Replies: 13
- Views: 8490
Re: dragon 32 secam psu
What is your source of sound ? A tape reader ? A computer ?
- Sat Oct 28, 2017 8:12 pm
- Forum: Dragon General
- Topic: New hardware - Tape reader emulator
- Replies: 0
- Views: 7755
New hardware - Tape reader emulator
Hello everybody, Today I'll talk about a new hardware device for our old computers : a tape-reader emulator, the SD-LEP. This project was created by a french guy initially for the Thomson french serie of computers, but the project works with a wide variety of computers. I tried it with my Dragon 32,...
- Sat Oct 28, 2017 7:56 pm
- Forum: Dragon General
- Topic: dragon 32 secam psu
- Replies: 13
- Views: 8490
Re: dragon 32 secam psu
Some pictures of my machine are available from this topic :
viewtopic.php?f=5&t=5561
If you are interested by more beautiful pictures, I can take some better ones if you want to share or upload them.
viewtopic.php?f=5&t=5561
If you are interested by more beautiful pictures, I can take some better ones if you want to share or upload them.