Handle situation where EHB is active but plane count is less than 6.

diff --git a/drawing.cpp b/drawing.cpp
index 42c6cc08fe17b7f680dae932f58b34a01d350d19..606852adc858c02c4299e7265fb1a157d92f73ff 100644 (file)
--- a/drawing.cpp
+++ b/drawing.cpp
@@ -5006,6 +5006,9 @@ static void select_lts(void)
        if (denise_max_planes <= 4 && bplmode_new == CMODE_HAM) {
                bplmode_new = CMODE_NORMAL;
        }
+       if (denise_max_planes <= 5 && (bplmode_new == CMODE_EXTRAHB || bplmode_new == CMODE_EXTRAHB_ECS_KILLEHB)) {
+               bplmode_new = CMODE_NORMAL;
+       }
 
        if (aga_mode) {