From: Toni Wilen <twilen@winuae.net>
Date: Tue, 7 Feb 2023 19:28:24 +0000 (+0200)
Subject: Fix Prometheus PCI bridge byte wide access endian swap
X-Git-Tag: 5.0.0~163
X-Git-Url: https://git.unchartedbackwaters.co.uk/w/?a=commitdiff_plain;h=4e7b1d5a9d925c3eb9db8fdfa9d3efe6bbc7b74d;p=francis%2Fwinuae.git

Fix Prometheus PCI bridge byte wide access endian swap
---

diff --git a/pci.cpp b/pci.cpp
index 3d845512..2835fdea 100644
--- a/pci.cpp
+++ b/pci.cpp
@@ -472,7 +472,11 @@ static uae_u8 *get_pci_config(uaecptr addr, int size, uae_u32 v, int *endianswap
 			}
 			*endianswap = 0;
 		} else {
-			c[off] = pcibs->board->pci_get_config(off ^ 3);
+			if (pcib->endian_swap_config > 0) {
+				c[off] = pcibs->board->pci_get_config(off ^ 0);
+			} else {
+				c[off] = pcibs->board->pci_get_config(off ^ 3);
+			}
 			*endianswap = 0;
 		}
 	} else {
@@ -559,7 +563,11 @@ static void update_pci_config(uaecptr addr, int size)
 				pcibs->board->pci_put_config(off + 1, d[off + 1]);
 			}
 		} else {
-			pcibs->board->pci_put_config(off + 0, d[off + 0]);
+			if (pcib->endian_swap_config > 0) {
+				pcibs->board->pci_put_config(off ^ 0, d[off + 0]);
+			} else {
+				pcibs->board->pci_put_config(off ^ 3, d[off + 0]);
+			}
 		}
 		if ((off >= 0x10 && off < 0x10 + (MAX_PCI_BARS - 1) * 4) || (off >= 0x30 && off < 0x34)) {
 			int index;