diff options
| author | Laurent Vivier <laurent@vivier.eu> | 2019-12-20 22:40:54 +0100 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2020-01-08 11:01:59 +1100 |
| commit | 068fe58cf93030fd96b7659bfc7626867ecd518a (patch) | |
| tree | d1b98ca9cfd3cc476cd48311d6850ff66d346819 | |
| parent | 8f06e3705e83c9df5a8dc61bd72b4ccf2794f076 (diff) | |
mos6522: remove anh register
Register addr 1 is defined as buffer A with handshake (vBufAH),
register addr 15 is also defined as buffer A without handshake (vBufA).
As both addresses access the same register, remove the definition of
'anh' and use only 'a' (with VIA_REG_ANH and VIA_REG_A).
Fixes: 51f233ec92cd ("misc: introduce new mos6522 VIA device and enable it for ppc builds")
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20191220214054.76525-1-laurent@vivier.eu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
| -rw-r--r-- | hw/misc/mos6522.c | 16 | ||||
| -rw-r--r-- | include/hw/misc/mos6522.h | 1 |
2 files changed, 8 insertions, 9 deletions
diff --git a/hw/misc/mos6522.c b/hw/misc/mos6522.c index cecf0be59e..10b85bf751 100644 --- a/hw/misc/mos6522.c +++ b/hw/misc/mos6522.c @@ -244,6 +244,9 @@ uint64_t mos6522_read(void *opaque, hwaddr addr, unsigned size) val = s->b; break; case VIA_REG_A: + qemu_log_mask(LOG_UNIMP, "Read access to register A with handshake"); + /* fall through */ + case VIA_REG_ANH: val = s->a; break; case VIA_REG_DIRB: @@ -297,9 +300,7 @@ uint64_t mos6522_read(void *opaque, hwaddr addr, unsigned size) val = s->ier | 0x80; break; default: - case VIA_REG_ANH: - val = s->anh; - break; + g_assert_not_reached(); } if (addr != VIA_REG_IFR || val != 0) { @@ -322,6 +323,9 @@ void mos6522_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) mdc->portB_write(s); break; case VIA_REG_A: + qemu_log_mask(LOG_UNIMP, "Write access to register A with handshake"); + /* fall through */ + case VIA_REG_ANH: s->a = (s->a & ~s->dira) | (val & s->dira); mdc->portA_write(s); break; @@ -395,9 +399,7 @@ void mos6522_write(void *opaque, hwaddr addr, uint64_t val, unsigned size) qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); break; default: - case VIA_REG_ANH: - s->anh = val; - break; + g_assert_not_reached(); } } @@ -439,7 +441,6 @@ const VMStateDescription vmstate_mos6522 = { VMSTATE_UINT8(pcr, MOS6522State), VMSTATE_UINT8(ifr, MOS6522State), VMSTATE_UINT8(ier, MOS6522State), - VMSTATE_UINT8(anh, MOS6522State), VMSTATE_STRUCT_ARRAY(timers, MOS6522State, 2, 0, vmstate_mos6522_timer, MOS6522Timer), VMSTATE_END_OF_LIST() @@ -460,7 +461,6 @@ static void mos6522_reset(DeviceState *dev) s->ifr = 0; s->ier = 0; /* s->ier = T1_INT | SR_INT; */ - s->anh = 0; s->timers[0].frequency = s->frequency; s->timers[0].latch = 0xffff; diff --git a/include/hw/misc/mos6522.h b/include/hw/misc/mos6522.h index 493c907537..97384c6e02 100644 --- a/include/hw/misc/mos6522.h +++ b/include/hw/misc/mos6522.h @@ -115,7 +115,6 @@ typedef struct MOS6522State { uint8_t pcr; uint8_t ifr; uint8_t ier; - uint8_t anh; MOS6522Timer timers[2]; uint64_t frequency; |