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/* |
/* |
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* Copyright (C) 2005-2006 Anders Gavare. All rights reserved. |
* Copyright (C) 2005-2007 Anders Gavare. All rights reserved. |
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* |
* |
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* Redistribution and use in source and binary forms, with or without |
* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
* modification, are permitted provided that the following conditions are met: |
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* SUCH DAMAGE. |
* SUCH DAMAGE. |
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* |
* |
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* |
* |
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* $Id: dev_cpc700.c,v 1.7 2006/01/01 13:17:16 debug Exp $ |
* $Id: dev_cpc700.c,v 1.10 2007/01/29 19:03:16 debug Exp $ |
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* |
* |
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* IBM CPC700 bridge; PCI and interrupt controller. |
* IBM CPC700 bridge; PCI and interrupt controller. |
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*/ |
*/ |
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#include "bus_pci.h" |
#include "bus_pci.h" |
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#include "cpu.h" |
#include "cpu.h" |
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#include "device.h" |
#include "device.h" |
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#include "devices.h" |
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#include "machine.h" |
#include "machine.h" |
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#include "memory.h" |
#include "memory.h" |
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#include "misc.h" |
#include "misc.h" |
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#include "cpc700reg.h" |
#include "cpc700reg.h" |
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struct cpc700_data { |
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struct interrupt ppc_irq; /* Connected to the CPU */ |
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uint32_t sr; /* Interrupt Status register */ |
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uint32_t er; /* Interrupt Enable register */ |
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struct pci_data *pci_data; /* PCI bus */ |
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}; |
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void cpc700_interrupt_assert(struct interrupt *interrupt) |
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{ |
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struct cpc700_data *d = interrupt->extra; |
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d->sr |= (1 << interrupt->line); |
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if (d->sr & d->er) |
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INTERRUPT_ASSERT(d->ppc_irq); |
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} |
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void cpc700_interrupt_deassert(struct interrupt *interrupt) |
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{ |
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struct cpc700_data *d = interrupt->extra; |
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d->sr &= ~(1 << interrupt->line); |
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if (!(d->sr & d->er)) |
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INTERRUPT_DEASSERT(d->ppc_irq); |
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} |
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/* |
/* |
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* dev_cpc700_pci_access(): |
* dev_cpc700_pci_access(): |
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* |
* |
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case CPC_UIC_SR: |
case CPC_UIC_SR: |
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/* Status register (cleared by writing ones): */ |
/* Status register (cleared by writing ones): */ |
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if (writeflag == MEM_READ) |
if (writeflag == MEM_READ) { |
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odata = d->sr; |
odata = d->sr; |
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else |
} else { |
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d->sr &= ~idata; |
d->sr &= ~idata; |
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if (!(d->sr & d->er)) |
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INTERRUPT_DEASSERT(d->ppc_irq); |
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} |
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break; |
break; |
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case CPC_UIC_SRS: |
case CPC_UIC_SRS: |
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if (writeflag == MEM_READ) { |
if (writeflag == MEM_READ) { |
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fatal("[ cpc700_int: read from CPC_UIC_SRS? ]\n"); |
fatal("[ cpc700_int: read from CPC_UIC_SRS? ]\n"); |
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odata = d->sr; |
odata = d->sr; |
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} else |
} else { |
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d->sr = idata; |
d->sr = idata; |
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if (d->sr & d->er) |
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INTERRUPT_ASSERT(d->ppc_irq); |
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else |
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INTERRUPT_DEASSERT(d->ppc_irq); |
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} |
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break; |
break; |
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case CPC_UIC_ER: |
case CPC_UIC_ER: |
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/* Enable register: */ |
/* Enable register: */ |
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if (writeflag == MEM_READ) |
if (writeflag == MEM_READ) { |
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odata = d->er; |
odata = d->er; |
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else |
} else { |
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d->er = idata; |
d->er = idata; |
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if (d->sr & d->er) |
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INTERRUPT_ASSERT(d->ppc_irq); |
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else |
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INTERRUPT_DEASSERT(d->ppc_irq); |
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} |
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break; |
break; |
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case CPC_UIC_MSR: |
case CPC_UIC_MSR: |
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/* Masked status: */ |
/* Masked status: */ |
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if (writeflag == MEM_READ) |
if (writeflag == MEM_READ) { |
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odata = d->sr & d->er; |
odata = d->sr & d->er; |
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else |
} else { |
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fatal("[ cpc700_int: write to CPC_UIC_MSR? ]\n"); |
fatal("[ cpc700_int: write to CPC_UIC_MSR? ]\n"); |
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} |
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break; |
break; |
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default:if (writeflag == MEM_WRITE) { |
default:if (writeflag == MEM_WRITE) { |
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} |
} |
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/* |
DEVINIT(cpc700) |
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* dev_cpc700_init(): |
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*/ |
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struct cpc700_data *dev_cpc700_init(struct machine *machine, struct memory *mem) |
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{ |
{ |
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struct cpc700_data *d; |
struct cpc700_data *d; |
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char tmp[300]; |
char tmp[300]; |
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int i; |
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d = malloc(sizeof(struct cpc700_data)); |
d = malloc(sizeof(struct cpc700_data)); |
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if (d == NULL) { |
if (d == NULL) { |
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} |
} |
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memset(d, 0, sizeof(struct cpc700_data)); |
memset(d, 0, sizeof(struct cpc700_data)); |
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/* Connect to the CPU's interrupt pin: */ |
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INTERRUPT_CONNECT(devinit->interrupt_path, d->ppc_irq); |
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/* Register 32 CPC700 interrupts: */ |
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for (i=0; i<32; i++) { |
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struct interrupt template; |
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char n[300]; |
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snprintf(n, sizeof(n), "%s.cpc700.%i", |
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devinit->interrupt_path, i); |
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memset(&template, 0, sizeof(template)); |
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template.line = i; |
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template.name = n; |
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template.extra = d; |
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template.interrupt_assert = cpc700_interrupt_assert; |
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template.interrupt_deassert = cpc700_interrupt_deassert; |
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interrupt_handler_register(&template); |
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} |
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/* Register a PCI bus: */ |
/* Register a PCI bus: */ |
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snprintf(tmp, sizeof(tmp), "%s.cpc700", devinit->interrupt_path); |
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d->pci_data = bus_pci_init( |
d->pci_data = bus_pci_init( |
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machine, |
devinit->machine, |
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0 /* pciirq: TODO */, |
tmp, /* pciirq path */ |
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0, /* pci device io offset */ |
0, /* pci device io offset */ |
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0, /* pci device mem offset */ |
0, /* pci device mem offset */ |
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CPC_PCI_IO_BASE, /* PCI portbase */ |
CPC_PCI_IO_BASE, /* PCI portbase */ |
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CPC_PCI_MEM_BASE, /* PCI membase: TODO */ |
CPC_PCI_MEM_BASE, /* PCI membase: TODO */ |
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0, /* PCI irqbase: TODO */ |
tmp, /* PCI irqbase */ |
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0, /* ISA portbase: TODO */ |
0, /* ISA portbase: TODO */ |
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0, /* ISA membase: TODO */ |
0, /* ISA membase: TODO */ |
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0); /* ISA irqbase: TODO */ |
tmp); /* ISA irqbase */ |
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switch (devinit->machine->machine_type) { |
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switch (machine->machine_type) { |
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case MACHINE_PMPPC: |
case MACHINE_PMPPC: |
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bus_pci_add(machine, d->pci_data, mem, 0, 0, 0, |
bus_pci_add(devinit->machine, d->pci_data, |
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"heuricon_pmppc"); |
devinit->machine->memory, 0, 0, 0, "heuricon_pmppc"); |
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break; |
break; |
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default:fatal("!\n! WARNING: cpc700 for non-implemented machine" |
default:fatal("!\n! WARNING: cpc700 for non-implemented machine" |
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" type\n!\n"); |
" type\n!\n"); |
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exit(1); |
exit(1); |
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} |
} |
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/* PCI configuration registers: */ |
/* PCI configuration registers: */ |
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memory_device_register(mem, "cpc700_pci", CPC_PCICFGADR, 8, |
memory_device_register(devinit->machine->memory, "cpc700_pci", |
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dev_cpc700_pci_access, d, DM_DEFAULT, NULL); |
CPC_PCICFGADR, 8, dev_cpc700_pci_access, d, DM_DEFAULT, NULL); |
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/* Interrupt controller: */ |
/* Interrupt controller: */ |
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memory_device_register(mem, "cpc700_int", CPC_UIC_BASE, CPC_UIC_SIZE, |
memory_device_register(devinit->machine->memory, "cpc700_int", |
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dev_cpc700_int_access, d, DM_DEFAULT, NULL); |
CPC_UIC_BASE, CPC_UIC_SIZE, dev_cpc700_int_access, d, |
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DM_DEFAULT, NULL); |
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/* Two serial ports: */ |
/* Two serial ports: */ |
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snprintf(tmp, sizeof(tmp), "ns16550 irq=%i addr=0x%llx name2=tty0", |
snprintf(tmp, sizeof(tmp), "ns16550 irq=%s.cpc700.%i addr=0x%llx " |
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31 - CPC_IB_UART_0, (long long)CPC_COM0); |
"name2=tty0", devinit->interrupt_path, 31 - CPC_IB_UART_0, |
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machine->main_console_handle = (size_t)device_add(machine, tmp); |
(long long)CPC_COM0); |
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snprintf(tmp, sizeof(tmp), "ns16550 irq=%i addr=0x%llx name2=tty1", |
devinit->machine->main_console_handle = (size_t) |
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31 - CPC_IB_UART_1, (long long)CPC_COM1); |
device_add(devinit->machine, tmp); |
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device_add(machine, tmp); |
snprintf(tmp, sizeof(tmp), "ns16550 irq=%s.cpc700.%i addr=0x%llx " |
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"name2=tty1", devinit->interrupt_path, 31 - CPC_IB_UART_1, |
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(long long)CPC_COM1); |
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device_add(devinit->machine, tmp); |
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devinit->return_ptr = d->pci_data; |
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return d; |
return 1; |
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} |
} |
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