- Original Lambda 8300 ROM
- Lambda 8300 LAM10061.BIN
Additional commands to ZX81:- BEEP
- NOBEEP
- SOUND
- TEMPO
- MUSIC
- Lambda 8300 LAM10061.BIN
- Updated Lambda 8300 ROM with color support
- Lambda 8300.rom
- Power 3000 ROM with colour kit commands.rom
- Marathon 32 MAR14348.BIN
- Lambda.rom in EightyOne
Additional commands to original Lambda 8300:- INK
- PAPER
- BORDER
- CAC-3 ROM
- cac-3.rom
Additional commands to Updated Lambda 8300 ROM with color support:- READ
- DATA
- RESTORE
- cac-3.rom
- NF300 ROM
- NF300.ROM
Additional commands to Updated Lambda 8300 ROM with color support:- READ
- DATA
- RESTORE
- NF300.ROM
- ZX81 compatible ROM for Lambda 8300
- Power 3000.rom
- Lambda 8300 ROM modified ZX81 compatible.rom
- 8300.rom in EightyOne
Additional commands to ZX81:- BEEP
- IN
- OUT
Different ROMs for Lambda 8300
Re: Different ROMs for Lambda 8300
These are the ROMs for Lambda hardware I have found on Internet
Re: Different ROMs for Lambda 8300
Changes in RED (updated list)
These are the ROMs for Lambda hardware I have found on Internet
- Original Lambda 8300 ROM
- Lambda 8300 LAM10061.BIN
Additional commands to ZX81:
- BEEP
- NOBEEP
- SOUND
- TEMPO
- MUSIC
- Updated Lambda 8300 ROM with color support (all files same byte-for-byte)
- Lambda 8300.rom
- Power 3000 ROM with colour kit commands.rom
- Marathon 32 MAR14348.BIN (no longer available for checking)
- Lambda.rom in EightyOne
- embedded in NO$ZX 2.0 emulator
Additional commands to original Lambda 8300:
- INK
- PAPER
- BORDER
- CAC-3 ROM
- cac-3.rom (8EEC1EC6-cac-3.rom)
Additional commands to Updated Lambda 8300 ROM with color support:
- READ
- DATA
- RESTORE
- NF300 ROM
- NF300.ROM (F8BBA9D8-NF300.ROM)
Additional commands to Updated Lambda 8300 ROM with color support:
- READ
- DATA
- RESTORE
- ZX81 compatible ROM for Lambda 8300 (all files same)
- Power 3000.rom
- Lambda 8300 ROM modified ZX81 compatible.rom
- 8300.rom in EightyOne
Additional commands to ZX81:
- BEEP
- IN
- OUT
Re: Different ROMs for Lambda 8300
I know the files are the same. I was trying to tell, that the same ROM had different names. Somehow I wasn’t clear.
Re: Different ROMs for Lambda 8300
Hello!
New on this list, as I just acquired a Lambda 8300.
I need to replace the ROM in a Lambda 8300. I tried to download the Lambda 8300 ROM LAM10061.BIN, but the link seems to be broken. Does anyone here have the ROM binary.
Best
Frank
New on this list, as I just acquired a Lambda 8300.
I need to replace the ROM in a Lambda 8300. I tried to download the Lambda 8300 ROM LAM10061.BIN, but the link seems to be broken. Does anyone here have the ROM binary.
Best
Frank
Re: Different ROMs for Lambda 8300
http://web.archive.org/web/201612200322 ... M10061.BIN
As the Lambda 8300 uses masked ROM, you'll not be able to replace it with an EPROM or EEPROM without an adapter.
As the Lambda 8300 uses masked ROM, you'll not be able to replace it with an EPROM or EEPROM without an adapter.
Re: Different ROMs for Lambda 8300
Thanks!
Well, I guess that there is info about EPROM adaptors to be found on the web.
In the meantime I've come to suspect that my issue really has more to do with the 74LS05, as it looks like the data bus lines behave weird, while the address lines look normal.
/Frank
Well, I guess that there is info about EPROM adaptors to be found on the web.
In the meantime I've come to suspect that my issue really has more to do with the 74LS05, as it looks like the data bus lines behave weird, while the address lines look normal.
/Frank
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Re: Different ROMs for Lambda 8300
It has to be said, mask ROM chips can occasionally fail, but most are fairly reliable. So it’s definitely worthwhile double checking and investigating other possible problems.
Mark
Mark
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert ![Exclamation :!:](./images/smilies/icon_exclaim.gif)
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
![Exclamation :!:](./images/smilies/icon_exclaim.gif)
![Exclamation :!:](./images/smilies/icon_exclaim.gif)
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
![Exclamation :!:](./images/smilies/icon_exclaim.gif)
Looking forward to summer later in the year.
Re: Different ROMs for Lambda 8300
In the design of the ZX81 (which Lambda 8300 is a clone of), the ULA (glue logic IC) overrides data from for the CPU on the data bus. So the data bus signals does not look normal. However the signals are within specification to work.
This is explained in this video @6:30+ https://youtu.be/N9wEcpF-9-c
This is explained in this video @6:30+ https://youtu.be/N9wEcpF-9-c
Re: Different ROMs for Lambda 8300
Signal should be over 4V peak-to-peak, and that is the case on the address bus, but on the data bus they are less than 2V. That cannot be right.
/Frank
/Frank
Re: Different ROMs for Lambda 8300
I'm not an expert in electronics. The construction with the 74LS05 is different from the ZX81. My guess is that the 74LS05 is used to feed the NOP instruction into the data bus from the ULA. That might be wrong, as that would conflict always on the databus, as there is no resistors between the 75LS05 and databus towards the CPU.
![Image](https://sinclairzxworld.com/download/file.php?id=1418)