FDC: Fix initial condition on non-DMA writes, fixes #4785.

2024-09-02 19:33:13 +02:00
parent 547ae9ad6a
commit 1e5f8f9d3f
1 changed files with 4 additions and 2 deletions
--- a/src/floppy/fdc.c
+++ b/src/floppy/fdc.c
@@ -612,9 +612,11 @@ fdc_io_command_phase1(fdc_t *fdc, int out)

    ui_sb_update_icon(SB_FLOPPY | real_drive(fdc, fdc->drive), 1);
    fdc->stat = out ? 0x10 : 0x50;
-    if ((fdc->flags & FDC_FLAG_PCJR) || !fdc->dma)
+    if ((fdc->flags & FDC_FLAG_PCJR) || !fdc->dma) {
        fdc->stat |= 0x20;
-    else
+        if (out)
+            fdc->stat |= 0x80;
+    } else
        dma_set_drq(fdc->dma_ch, 1);
 }