Ripping the RNC sector loader...

[h0ffman]

Hi Guys

I've been trying to rip the RNC sector loader out of Rod-Land (Can be found at $E936 when the game is loaded). I found the start point and ripped a good 6k off it so still needs trimming.

I've also determined the registers for calling are...

D0 = Drive No
D1 = Start Sector
D2 = Number of Sectors

A0 = Load Address
A1 = MFM Buffer (I'm guess)

However, every time I call it, all I get back is $1B in D0 and no data loaded. I can see it moving to the track I'm asking it to load, just wont load any data.

I've eneabled DiskDMA before calling the routine, was don't think its that..


Any ideas anyone? Binary attached.

[jotd]

i think rnc tools are available on codetapper page (www.zap something action)

codetapper is the expert about those tools

hum i supposed you passed a chip buffer in a1

[Galahad/FLT]

Set d0 as null, d1 start sector. D2 amount of sectors to read, d3 as null, a0 is load address, a1 is trackbuffer and must be in chipram

[h0ffman]

Dam it. Thats exactly how I'm calling it. I found codetappers site but no RNC tools in sight. If anyone has these can they upload them to the zone?

Edit: Don't worry, I just re-ripped it from Qwak, working like a charm now

[h0ffman]

BTW - If anyones interested, I resourced this loader and added cia timing switches. let me know and I'll upload the code.

[WayneK]

The RNC loader already uses CIA timers... so I expect that was quite an easy job for you
By default the common version uses CIA-B Timer A, there is also a version using CIA-A Timer A in the RNC archive Galahad mentioned earlier in the thread.

[Galahad/FLT]

N.O.M.A.D. also created a shortened RNC Sector loader that had all write code removed so that the loader could fit in place of the PDOS loader, as the PDOS loader was quite a bit smaller.

[Carlos Ace]

Originally Posted by h0ffman

Dam it. Thats exactly how I'm calling it. I found codetappers site but no RNC tools in sight. If anyone has these can they upload them to the zone?
Edit: Don't worry, I just re-ripped it from Qwak, working like a charm now

In the Zone now, if someone else wants it too

[h0ffman]

Originally Posted by WayneK

The RNC loader already uses CIA timers... so I expect that was quite an easy job for you
By default the common version uses CIA-B Timer A, there is also a version using CIA-A Timer A in the RNC archive Galahad mentioned earlier in the thread.

When I said timer switches, I meant switches so you can select CIA A / B and timer A / B. The loader originially used CIAB / Timer A which conflicted with my protracker replay.

[dirkies]

reminds me of some RNC removal tools which were on one of the disks of my cracked Xenon 2 game, as these were trackdisk disks but one day I had the weird idea inserting a disk (disk 2 I believe) under workbench and I saw RNC tools listed which looked from RNC itself which could install and modifiy their lock. Can someone confirm this?

[prowler]

Originally Posted by Carlos Ace

In the Zone now, if someone else wants it too

Those tools have always been available from Codetapper's page here:
http://whdloadrules.tripod.com/rob_n...interview.html

[h0ffman]

Is it just me being dim or cannot I not find the standard sector loader in that lot?

[prowler]

You're right; it doesn't seem to be there. That's all there is, though.

[Galahad/FLT]

Look for any FLT crack of a pdos game cracked by NOMAD, mortal kombat for one should have his reduxed size rnc sector loader