From 0f03047c1b09fcccf16bcf1c2d8d9e375155adfd Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Wed, 4 Oct 2023 09:37:50 +0100 Subject: [PATCH] q800: implement additional machine id bits on VIA1 port A MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Co-developed-by: Laurent Vivier Signed-off-by: Mark Cave-Ayland Reviewed-by: Philippe Mathieu-Daudé Message-ID: <20231004083806.757242-5-mark.cave-ayland@ilande.co.uk> Signed-off-by: Laurent Vivier --- hw/misc/mac_via.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/hw/misc/mac_via.c b/hw/misc/mac_via.c index f84cc68849..e87a1b82d8 100644 --- a/hw/misc/mac_via.c +++ b/hw/misc/mac_via.c @@ -114,6 +114,9 @@ #define VIA1A_CPUID1 0x04 /* CPU id bit 0 on RBV, others */ #define VIA1A_CPUID2 0x10 /* CPU id bit 0 on RBV, others */ #define VIA1A_CPUID3 0x40 /* CPU id bit 0 on RBV, others */ +#define VIA1A_CPUID_MASK (VIA1A_CPUID0 | VIA1A_CPUID1 | \ + VIA1A_CPUID2 | VIA1A_CPUID3) +#define VIA1A_CPUID_Q800 (VIA1A_CPUID0 | VIA1A_CPUID2) /* * Info on VIA1B is from Macintosh Family Hardware & MkLinux. @@ -872,9 +875,18 @@ static uint64_t mos6522_q800_via1_read(void *opaque, hwaddr addr, unsigned size) { MOS6522Q800VIA1State *s = MOS6522_Q800_VIA1(opaque); MOS6522State *ms = MOS6522(s); + uint64_t ret; addr = (addr >> 9) & 0xf; - return mos6522_read(ms, addr, size); + ret = mos6522_read(ms, addr, size); + switch (addr) { + case VIA_REG_A: + case VIA_REG_ANH: + /* Quadra 800 Id */ + ret = (ret & ~VIA1A_CPUID_MASK) | VIA1A_CPUID_Q800; + break; + } + return ret; } static void mos6522_q800_via1_write(void *opaque, hwaddr addr, uint64_t val, -- 2.11.0