Method prodosMLI

src/main/java/jace/hardware/ProdosDriver.java:80–128

()

    }
    
    private MLI_RETURN prodosMLI() {
        return Emulator.withMemory(memory -> {
            try {
                int cmd = memory.readRaw(MLI_COMMAND);
                MLI_COMMAND_TYPE command = MLI_COMMAND_TYPE.fromInt(cmd);
                int unit = (memory.readWordRaw(MLI_UNITNUMBER) & 0x080) > 0 ? 1 : 0;
                if (changeUnit(unit) == false) {
                    return MLI_RETURN.NO_DEVICE;
                }
                int block = memory.readWordRaw(MLI_BLOCK_NUMBER);
                int bufferAddress = memory.readWordRaw(MLI_BUFFER_ADDRESS);
            //    System.out.println(getOwner().getName()+" MLI Call "+command+", unit "+unit+" Block "+block+" --> "+Integer.toHexString(bufferAddress));
                if (command == null) {
                    System.out.println(getOwner().getName()+" Mass storage given bogus command (" + Integer.toHexString(cmd) + "), returning I/O error");
                    return MLI_RETURN.IO_ERROR;
                }
                switch (command) {
                    case STATUS:
                        int blocks = getSize();
                        Emulator.withComputer(computer -> {
                            MOS65C02 cpu = (MOS65C02) computer.getCpu();
                            cpu.X = blocks & 0x0ff;
                            cpu.Y = (blocks >> 8) & 0x0ff;
                        });
                        if (isWriteProtected()) {
                            return MLI_RETURN.WRITE_PROTECTED;
                        }
                        break;
                    case FORMAT:
                        mliFormat();
                    case READ:
                        mliRead(block, bufferAddress);
                        break;
                    case WRITE:
                        mliWrite(block, bufferAddress);
                        break;
                    default:
                        System.out.println(getOwner().getName()+" MLI given bogus command (" + Integer.toHexString(cmd) + " = " + command.name() + "), returning I/O error");
                        return MLI_RETURN.IO_ERROR;
                }
                return MLI_RETURN.NO_ERROR;
            } catch (UnsupportedOperationException ex) {
                return MLI_RETURN.WRITE_PROTECTED;
            } catch (IOException ex) {
                System.out.println(getOwner().getName()+" Encountered IO Error, returning error: " + ex.getMessage());
                return MLI_RETURN.IO_ERROR;
            }
        }, MLI_RETURN.NO_ERROR);
    }
}