Hi! I'm new here as well in chiptunes, but I think I have a solution for this problem.
As I see bass drums they don't need to be so low. As long as they are lower enought from the snare and are punchy a little. It will sound good enought for a worst case scenario like this.
I'm using the following drum in a drum&bass pattern. It's noisy, but the whole drum line is, so it hase a nasty feeling. (I've only tryed this on BGB yet, so sorry if it isn't good on the real hardware.)
Channel: NOI
Type: Noise
Envelope: $C2
Shape: $E1 (You can try other shapes becouse there are some other useable ones)
Table: (This is what trying to give the characteristics to the drum.)
TSP CMD
EA -00
0C -00
0A -00
F2 -00
F1 -00
F5 -00
00 K00
Note: C3 (raising octaves raisis pitch, but this is not commonly useable i think)
The other instrument in case you want to try:
Snare:
---------
Channel: NOI
Type: Noise
Envelope: $C2
Shape: $E1
Note: C3 (C4 is a higher pitch, but higher octaves only lowering the volume of this note)
High Hat:
-------------
Channel: NOI
Type: Noise
Envelope: $B1
Shape: $FF
Note: C7 (higher octaves only lowering the volume of this note - I used 7 becouse it will not stand out mutch, so 1 note at a time isn't hurt so much)
The pattern for a simple dnb drum line:
BassKick
-
HighHat
-
Snare
-
HighHat
-
HighHat
-
BassKick
-
Snare
-
HighHat
-
Happy experimenting! 