110 lines
5.1 KiB
Go
110 lines
5.1 KiB
Go
package main
|
|
|
|
import (
|
|
"testing"
|
|
|
|
"github.com/freewilll/apple2-go/cpu"
|
|
"github.com/freewilll/apple2-go/keyboard"
|
|
"github.com/freewilll/apple2-go/mmu"
|
|
"github.com/freewilll/apple2-go/system"
|
|
"github.com/freewilll/apple2-go/video"
|
|
"github.com/stretchr/testify/assert"
|
|
)
|
|
|
|
func assertMemoryConfiguration(t *testing.T, address uint16, upperRAMReadOnly bool, upperReadMappedToROM bool, d000Bank int) {
|
|
mmu.WriteMemory(address, 0x00)
|
|
assert.Equal(t, upperRAMReadOnly, mmu.UpperRAMReadOnly)
|
|
assert.Equal(t, upperReadMappedToROM, mmu.UpperReadMappedToROM)
|
|
assert.Equal(t, d000Bank, mmu.D000Bank)
|
|
}
|
|
|
|
// TestBankSwitching tests the area starting at $d000 and managed by $c08x.
|
|
// First the initial settings are checked. Then a bunch of assertions on the
|
|
// internal code. Then writes to $c08x.
|
|
func TestBankSwitching(t *testing.T) {
|
|
cpu.InitInstructionDecoder()
|
|
mmu.InitRAM()
|
|
mmu.InitApple2eROM()
|
|
mmu.InitIO()
|
|
cpu.Init()
|
|
keyboard.Init()
|
|
video.Init()
|
|
system.Init()
|
|
cpu.SetColdStartReset()
|
|
cpu.Reset()
|
|
|
|
// Sanity test that what we expect from the apple //e ROM is correct
|
|
assert.Equal(t, uint8(0x6f), mmu.ReadMemory(0xd000)) // read from ROM
|
|
assert.Equal(t, uint8(0xc3), mmu.ReadMemory(0xffff)) // read from ROM
|
|
|
|
// Verify ROM & RAM settings at startup
|
|
mmu.WipeRAM()
|
|
assert.Equal(t, uint8(0xc3), mmu.ReadMemory(0xffff)) // read from ROM
|
|
mmu.WriteMemory(0xffff, 0xff) // write to $ffff
|
|
assert.Equal(t, uint8(0xc3), mmu.ReadMemory(0xffff)) // ROM value is the same
|
|
assert.Equal(t, uint8(0xff), mmu.PhysicalMemory.MainMemory[0xffff]) // RAM has been updated
|
|
mmu.WriteMemory(0xd000, 0xfe) // write to $d000
|
|
assert.Equal(t, uint8(0x00), mmu.PhysicalMemory.MainMemory[0xc000]) // bank #1 RAM
|
|
assert.Equal(t, uint8(0xfe), mmu.PhysicalMemory.MainMemory[0xd000]) // bank #2 RAM
|
|
|
|
// Switch bank to 1, write and check physical memory
|
|
mmu.SetD000Bank(1)
|
|
mmu.SetUpperReadMappedToROM(false)
|
|
mmu.WriteMemory(0xd000, 0xfd) // write to $d000
|
|
assert.Equal(t, uint8(0xfd), mmu.PhysicalMemory.MainMemory[0xc000]) // bank #1 RAM
|
|
assert.Equal(t, uint8(0xfe), mmu.PhysicalMemory.MainMemory[0xd000]) // bank #2 RAM
|
|
|
|
// Enable RAM area for reading and check values
|
|
mmu.SetUpperReadMappedToROM(false)
|
|
assert.Equal(t, uint8(0xfd), mmu.ReadMemory(0xd000)) // read from bank #1 RAM
|
|
mmu.SetD000Bank(2)
|
|
assert.Equal(t, uint8(0xfe), mmu.ReadMemory(0xd000)) // read from bank #1 RAM
|
|
|
|
// Enable ROM area for reading and check values
|
|
mmu.SetUpperReadMappedToROM(true)
|
|
assert.Equal(t, uint8(0x6f), mmu.ReadMemory(0xd000)) // read from ROM
|
|
assert.Equal(t, uint8(0xc3), mmu.ReadMemory(0xffff)) // read from ROM
|
|
|
|
// Set d000 RAM to bank 1, RAM to read only and attempt writes
|
|
mmu.SetD000Bank(1)
|
|
mmu.SetUpperRAMReadOnly(true)
|
|
assert.Equal(t, uint8(0xfd), mmu.PhysicalMemory.MainMemory[0xc000]) // bank #1 RAM
|
|
assert.Equal(t, uint8(0xfe), mmu.PhysicalMemory.MainMemory[0xd000]) // bank #2 RAM
|
|
mmu.WriteMemory(0xd000, 0x01) // attempt to write to read only RAM
|
|
mmu.WriteMemory(0xffff, 0x02) // attempt to write to read only RAM
|
|
assert.Equal(t, uint8(0xfd), mmu.PhysicalMemory.MainMemory[0xc000]) // bank #1 RAM is unchanged
|
|
assert.Equal(t, uint8(0xfe), mmu.PhysicalMemory.MainMemory[0xd000]) // bank #2 RAM is unchanged
|
|
assert.Equal(t, uint8(0xff), mmu.PhysicalMemory.MainMemory[0xffff]) // top of RAM is unchanged
|
|
|
|
// Set RAM to write and write to it
|
|
mmu.SetUpperRAMReadOnly(false)
|
|
mmu.WriteMemory(0xd000, 0xfc) // write to RAM
|
|
mmu.WriteMemory(0xffff, 0xfb) // write to RAM
|
|
assert.Equal(t, uint8(0xfc), mmu.PhysicalMemory.MainMemory[0xc000]) // bank #1 RAM has been updated
|
|
assert.Equal(t, uint8(0xfe), mmu.PhysicalMemory.MainMemory[0xd000]) // bank #2 RAM is untouched
|
|
assert.Equal(t, uint8(0xfb), mmu.PhysicalMemory.MainMemory[0xffff]) // top of RAM has been updated
|
|
|
|
// Enable ROM area for reading and check values
|
|
mmu.SetUpperReadMappedToROM(true)
|
|
assert.Equal(t, uint8(0x6f), mmu.ReadMemory(0xd000)) // read from ROM
|
|
assert.Equal(t, uint8(0xc3), mmu.ReadMemory(0xffff)) // read from ROM
|
|
|
|
// Test writes to 0xc08x lead to correct memory configurations
|
|
assertMemoryConfiguration(t, 0xc080, true, false, 2)
|
|
assertMemoryConfiguration(t, 0xc081, false, true, 2)
|
|
assertMemoryConfiguration(t, 0xc082, true, true, 2)
|
|
assertMemoryConfiguration(t, 0xc083, false, false, 2)
|
|
assertMemoryConfiguration(t, 0xc084, true, false, 2)
|
|
assertMemoryConfiguration(t, 0xc085, false, true, 2)
|
|
assertMemoryConfiguration(t, 0xc086, true, true, 2)
|
|
assertMemoryConfiguration(t, 0xc087, false, false, 2)
|
|
assertMemoryConfiguration(t, 0xc088, true, false, 1)
|
|
assertMemoryConfiguration(t, 0xc089, false, true, 1)
|
|
assertMemoryConfiguration(t, 0xc08a, true, true, 1)
|
|
assertMemoryConfiguration(t, 0xc08b, false, false, 1)
|
|
assertMemoryConfiguration(t, 0xc08c, true, false, 1)
|
|
assertMemoryConfiguration(t, 0xc08d, false, true, 1)
|
|
assertMemoryConfiguration(t, 0xc08e, true, true, 1)
|
|
assertMemoryConfiguration(t, 0xc08f, false, false, 1)
|
|
}
|