archive.worldofdragon.org

By the way, while tracing till this point, I found an apparently Easter egg. It is an encoded string just using the eor function. The text that appears seem to be the name of three important people inside Microware: - The president and the OS9 programmers (one for sure ...) See image #image EasterE...

Sorry I have been away for a couple of weeks and couldn't respond during that time. The SAM/VDG can only allocate graphics on 512 byte ($200) boundaries, but OS9 by default allocates 256 byte pages. So doing a F$SRqMem for $1800 bytes can start on a non-512 byte boundary. Allocating an extra 256 byt...

As mentioned, there is commented source for a variety of the Boot Modules (including Dragon 64) included in NitrOS9 EOU. One thing that may really help you is download Kevin Darling's book "Inside OS-9 Level II" from the Color Computer archive - it actually describes how the boot process works and e...

Boot modules vary by drives hooked up (hard drive, floppy, etc.) so you need to find the one for the floppy controller that the Dragon normally uses. I would think the NitrOS9 GitHub should have those somewheres (for Level 1, anyways, although I don't think there is much difference between a Level 1...

I don't have the code in front of me, but in NitrOS9 Level 2, the 2 MB RAM detection basically does a map in of pages by powers of 2 (so it works with the older Quarter Meg boards that Burke & Burke did, as well as 1 and 2 MB RAM options), and sees if the value written changes when mapping them back...

I haven't had time to go through much of your source yet, but I did want to mention a bug - when you are selecting your speed, it allows the "R" key to be selected, rather than a number. This causes the game to run very slow, but still play. It really drags out the sound effects, so you can hear eac...

Pere - does that mean that the MPAGD games run faster, since it converts it to assembler vs. an intermediate type language?

Link to the start of the discussion: https://www.cpcwiki.eu/forum/general-discussion/the-best-8-bit-home-computer/msg139450/#msg139450 I think there are two reasons that Coco 3's seems scarce; 1) it was only sold in 3 countries, where as the 1/2 were sold in several dozen. 2) Since they are quite an...

I see some messages from a 'robcfg' on there... is that the same 'robcfg' here in the World of Dragon forums? If so, some talk about the Coco 3, etc. I might be able to help with some details that you can pass along: I would mention OS9 level 2 (now NitrOS9) for pre-emptive multitasking with a GUI m...

There is an index for Rainbow, but I don't think the other North American Coco magazines got one.