Macintosh-Tools/dingusppc
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Clean up some comments and messages.

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This commit is contained in:
Maxim Poliakovski 2019-12-27 00:42:02 +01:00
parent b311cea4e5
commit 134eda8c12
4 changed files with 5 additions and 33 deletions
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28
cpu/ppc/ppcmemory.cpp
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@ -59,32 +59,6 @@ std::atomic<bool> hash_found (false);
PPC_BAT_entry ibat_array[4] = {{0}};
PPC_BAT_entry dbat_array[4] = {{0}};
/**
Quickly map to memory - sort of.
0x00000000 - 0x7FFFFFFF - Macintosh system memory
(Because this emulator is trying to emulate a Mac with a Grackle motherboard,
the most memory that can ever be allocated to the system is 2 Gigs.)
0x80000000 - 0xFF7FFFFF - PCI memory
This memory is allocated to things like the memory controller, video, and audio.
0xF3000000 - Mac OS I/O Device area
0xF3013000 - Serial Printer Port (0x20 bytes)
0xF3013020 - Serial Modem Port (0x20 bytes)
0xF3011000 - BMAC Ethernet (0x1000 bytes)
0xF3014000 - DAVAudio Sound Bus (0x1000 bytes)
0xF3015000 - Swim 3 Floppy Disk Drive (0x1000 bytes)
0xF3016000 - Cuda (0x2000 bytes)
0xF3020000 - Heathrow ATA (Hard Drive Interface)
0xFF800000 - 0xFFFFFFFF - ROM memory
This memory is for storing the ROM needed to boot up the computer.
This could definitely be refactored better - TODO
**/
void msr_status_update(){
msr_ip_test = (ppc_state.ppc_msr >> 6) & 1;
msr_ir_test = (ppc_state.ppc_msr >> 5) & 1;
@ -594,8 +568,6 @@ void address_quickgrab_translate(uint32_t addr, uint8_t num_bytes)
{
/* data address translation if enabled */
if (ppc_state.ppc_msr & 0x10) {
//printf("DATA RELOCATION GO! - GRABBING \n");
addr = ppc_mmu_addr_translate(addr, 0);
}

2
devices/machineid.h
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@ -18,7 +18,7 @@
It contains a 16-bit value revealing machine's capabilities like bus speed,
ROM speed, I/O configuration etc.
Because the meaning of these bits is poorly documented, the code below
simply return raw values obtained from real hardware.
simply return a raw value obtained from real hardware.
*/
class GossamerID : public MMIODevice {
public:

6
devices/macio.h
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@ -1,7 +1,7 @@
/** MacIO device family emulation
Mac I/O (MIO) is a family of ASICs to bring support for Apple legacy
I/O hardware to PCI-based Power Macintosh. That legacy hardware has
I/O hardware to the PCI-based Power Macintosh. That legacy hardware has
existed long before Power Macintosh was introduced. It includes:
- versatile interface adapter (VIA)
- Sander-Woz integrated machine (SWIM) that is a floppy disk controller
@ -15,8 +15,8 @@
are called "cells", i.e. "VIA cell", "SWIM cell" etc.
MIO itself is PCI compliant while the legacy hardware it emulates isn't.
MIO occupies 512Kb of PCI memory space divided into registers space and DMA
space. Access to emulated legacy devices is accomplished by reading from/
MIO occupies 512Kb of the PCI memory space divided into registers space and
DMA space. Access to emulated legacy devices is accomplished by reading from/
writing to MIO's PCI address space at predefined offsets.
MIO includes a DMA controller that offers 15 DMA channels implementing

2
main.cpp
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@ -449,7 +449,7 @@ int main(int argc, char **argv)
if (romFile.fail()){
cerr << "rom.bin not present. Please provide an appropriate ROM file"
<< "and restart this program.\n";
<< " and restart this program.\n";
romFile.close();
return 1;