forum.defence-force.org

OK. I have some updates. I was able to burn the debug ROM into an EEPROM with my hacked together Arduino EEPROM programmer It boots into the diagnostic ROM. I says "RAM TEST PASSED". Then the screen goes blank just like the BASIC 1.0 ROM. Without the screen, I don't know how to test anythi...

Does anyone know if it's feasible to remove all 8 dram chips and replace it with one SRam chip like 62256. No it's faster and cheaper.
I think we can use Ras to latch address.

Maybe this is a clue. When the prompt is up (before it goes blank), it says "47870 BYTES FREE". I thought it's supposed to be "37631 BYTES FREE" where's the extra coming from? The number is consistent. 47870 BYTES FREE are absolutely OK - simply you have BASIC ROM ver.: 1.0 3763...

Maybe this is a clue. When the prompt is up (before it goes blank), it says "47870 BYTES FREE". I thought it's supposed to be "37631 BYTES FREE"
where's the extra coming from? The number is consistent.

I need to concatenate the binary to fit the space. Is that true, if so can some one tell me how to concatenate it? in windows that is. Use command prompt and type: copy /b diag.rom + diag.rom diag32k.rom In Oric pin1 is connected to VCC, so A14 will be always HIGH which means only the second half o...

Dbug,
I was not using a SCART but just the harness that came with the BLEE adapter and I wired it to a 5-pin DIN plug. Since I got 5 seconds of video, I concluded it is wired correctly.

thanks,

Chin

Hi all,
I'm going to burn the debug ROM into a AT28C256-15PC which is a 32K device. I think if I'm not mistaken, I need to concatenate the binary to fit the space. Is that true, if so can some one tell me how to concatenate it? in windows that is.

kenneth wrote: ↑Tue Jun 30, 2020 1:50 pm I m agree with Chema, the RF output with the aerial cable is the best way to check your Oric.
NB: With Erebus, your Oric-1 will become an Atmos.

Kenneth,
What do you mean by "With Erebus, your Oric-1 will become an Atmos"? Does the erebus replaces the ROM on board the ORIC ?

Dbug,
What kind of issue you are having with the display? I'll put a bench power supply to on it to check.

thanks,
Chin

Hi, I've looked at all the settings in the menu and nothing helps. I agree, disconnecting the RGBS should recover the signal but it does not. I'm going to put in the debug rom (I have to program one first). Also, before it booted up (i.e. before fixing the mix), I used to get the 3 white bars. That'...

I am trying this with oric 1 in north America

www.amazon.com/gp/product/B01MTKPWBW/re ... UTF8&psc=1

Hello, I'm new here but have owned an oric 1 since 1983. I am trying to fix mine. It was dead. It won't boot, I bypassed the regulator, fed in 5V directly. I connected the RGBS to one of these ( www.amazon.com/gp/product/B01MTKPWBW/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1 ) via the RGBS ...