RetroWiki & Cacharreo [RW]

I have found this answer from malikto999 dated some time ago ... By the way, even if you switch to RAM mode, the DISK BASIC add-on code and system stack will remain in $7000-$7FFF. It's a hindrance, isn't it? Since it is better to use a wide range of contiguous memory, how about temporarily moving ...

I'm late in joining the thread again... Regarding VSYNC of FM77AV, as everyone has followed, I posted a scanned image of the manual on August 23, 2023 in this thread. Honestly, I had forgotten that fact too. I wish I could search for my past posts. Anyway, I honestly don't have any knowledge about ...

Hello, I am getting frustrated with a program that *always* ends returning to Basic with the awful message Syntax Error IN 10 I am not sure what could be causing that problem. I was thinking that maybe the program is big enough to be overwritting the Basic program area, so that once finished the ...

2) Is there a way to use MMR from SUB? (very unlikely, but..) 4) Is there a way to change analog palette from SUB code? Since there is no I/O on the sub CPU side, I don't think it can be done directly. I think it is possible to request the main CPU to change the palette etc. as a return value for ...

3) Can i use MMR on MAIN (mapping to other zones of memory, not VRAM) and use VRAM from SUB simultaneously? No matter how MMR is mapped on the main CPU, it doesn't matter to the sub CPU, so I don't think it's a problem. If you want to map the sub-CPU's memory to MMR, you need to HALT the sub-CPU ...

2) Is there a way to use MMR from SUB? (very unlikely, but..) 4) Is there a way to change analog palette from SUB code? Since there is no I/O on the sub CPU side, I don't think it can be done directly. I think it is possible to request the main CPU to change the palette etc. as a return value for ...

Regarding MAIN-SUB communication... I want to ask @malikto999 about shared memory and the likes. I understand, more or less, the ways of doing things between MAIN and SUB (throught IRQs Cancel/Attention, busy signal...), the "official way". I assume all answers would be a big "NO", but you never ...

I've been very busy until last month, but now that I have some time, I'm rereading the thread. I would like to add a little bit about the scroll function. The VRAM offset register (sub CPU $D40E-$D40F) is write-only, so you must save the previous offset value yourself in order to scroll continuously ...

Xevious disk is in a proprietary format that is not an FBASIC file system, so you cannot open it with D77Manager.
I think the game loader is probably reading sectors of the disk directly, not the file format.

I was curious, so I looked into the compilation disk I had. The disk file has a problem with the D88 format structure, and 0 is written in the number of sectors in the sector headers. I edited the compilation disk file binary so that it can be read by D77Manager. There are 4 files for Mr.HEADING ...

I made a disk version of the loader.
Boot CKINGDOM.D77 and run LOADM"LOADER",,R.
Thanks for the unusual game, opossumz!

This is late, I would like to add some information about the structure of the disk. For FBASIC, reserve the system area on tracks 0-1 of the 2D disk. TRK SCT 0 1-2 : IPL (FM77AV loads and executes only sector 1 from $100) 0 3 : ID ('S' for 2D, 'E' for 2DD), number of drives used in STARTUP file, and ...

Hi, thanks a lot! That's a very interesting info! So the computer should be able to read sectors using $FE08 at BOOT time, then the question is How does disquete resulting of the formatting program "FORMAT5E" differ with respect to a Luxsor disquette excluding the data bytes, of course. Should the ...

There is a detailed explanation of the FM77AV boot process on Haserin's website.(http://haserin09.la.coocan.jp/difference.html#INITIATORROM) (I have attached a text translating the parts related to booting the FM77AV.) FM77AV loads the initiator ROM to $6000-$7FFF at boot time. After initializing ...

I'm sorry, but the content of this thread was difficult, and I only occasionally checked the responses. It will take some time to re-read all the responses, so please be patient. By the way, the floppy disk that "Luxor" cannot read is 2D media, right? If you write a regular FBASIC disk with 256 ...

Maybe malikto999 can fix it? I'm not convinced the game is 100% busted... I really want to play this game since it was reviewed here... https://monochromeeffect.org/JVCC/2021/07/05/cloud-kingdom-for-fm-7/ ... Anyone has a dump from other source? On the same compilation disk I was able to run only ...