Scala PC XT emulator
- 8088 CPU (instruction-exact), testet against ProcessorTests
- Intel 8237 DMA controller
- Intel 8253 PIT
- Intel 8259 PIC
- Intel 8255 PPI
- INS 8250 UART
- MC146818 RTC
- Lotech EMS
- Speaker
- AdLib audio card
- CGA, MDA, HDA video cards
- Floppy controller with 1.44M, 720K, 360K, 320K, 180K and 160K floppy images
- Hard disk controller with 10M and 24M hard disk images
- Option ROMs support
- Mouse support (serial)
- 8088 Debugger
- Keyboard
Disitaco requires a BIOS to run. The default BIOS is the GLa BIOS already included in the rom directory.
You can also use the original IBM 5160 BIOS, split in U18 and U19 rom files. The configuration file allows you to choose which BIOS to use.
Disitaco supports floppy and hard disk images. Images can be created with the makedisk command line utility.
Disitaco supports the Xebec hard disk controller and can be configured with the option.rom properties in the configuration file.
The hard disks images size can be 10M or 24M.
The emulator is already shipped with a 10M hard disk image, H_C.img, formatted with DOS 6.22, that can be used with the Xebec controller.
A Virtual 1.44 floppy disk can be created with the content of a local directory: in this case the floppy disk size must be set to 1.44M in the configuration file.
Disitaco supports CGA, MDA and HDA video cards. The CGA card can be configured to use the alternative character set and to display on a composite monitor. The emulator's frame size will be adjusted to the video card's resolution automatically.
Disitaco supports a serial mouse. The mouse can be configured to use 3 buttons and the scale factor for the X and Y axis. Must be enabled in the configuration file and activated using the 'Mouse capture' menu item under Tools. To deactivate the mouse, click the mouse wheel button with CTRL pressed.
Disitaco supports the speaker and the AdLib audio card. The speaker can be configured with a sampling frequency.
Disitaco supports the PC XT keyboard. The keyboard, at the moment, supports the Italian layout only.
Other than the serial mouse, Disitaco supports two out of the box serial port devices.
The first one is used to exchange files with the host, using the tool hostftp.exe shipped with the hard drive image, the second one can be used to connect a terminal to an external TCP/IP source.
Go to https://github.com/abbruzze/Disitaco/releases/latest and download and unzip on your computer the latest version. Be sure to have a jre (17 or above, best performance on latest versions) in the path and launch in the bin directory:
- On Windows: disitaco.bat
- On Linux: disitaco.sh
The emulator's configuration is stored in config/disitaco.config file.
Follows the default configuration file content. You can copy it to config/disitaco.config and modify it to suit your needs.
# Default Disitaco properties
# all path that does not start with / or <D>: (where <D> is a drive letter on Windows) are relative to Disitaco's installation home
# Windows path: every backslash character must be doubled: e.g. c:\temp => c:\\temp
# clock frequency in Hz
clock = 4770000
# 8088's speed correction factor: if > 1 slow down cpu
cpu.correctionFactor = 1.0
# bios can be configured either with 'bios' property that must reference a single bios rom or with 'bios.u18' and 'bios.u19' properties that must reference the u18 and u19 rom respectively
bios = rom/GLABIOS_0.2.5_8T.ROM
#bios.u18 = rom/BIOS_5160_10JAN86_U18_62X0851_27256_F800.BIN
#bios.u19 = rom/BIOS_5160_10JAN86_U19_62X0854_27256_F000.BIN
# graphic card: mda (monochrome), cga (color), hda (hercules)
video.card = cga
#total memory in Kbytes <= 640
memory = 640
# audio enabled/disabled
audio.enabled = true
# audio buffer in millis
audio.audioBufferMillis = 1
# speaker sampling frequency in Hz
speaker.samplingFreq = 48000
# speaker volume: 0 to 100
speaker.volume = 70
# AdLib audio card enabled
adlib.enabled = false
# AdLib volume: 0 to 100
adlib.volume = 100
# CGA char rom
cga.char.rom = rom/IBM_5788005_AM9264_1981_CGA_MDA_CARD.BIN
# CGA character set: true means alternative
cga.altCharSet = false
# CGA on composite monitor
cga.composite = false
# Lotech EMS
ems.lotech.enabled = true
ems.lotech.port = 260
ems.lotech.address = E0000
# floppy flushing: if enabled writes to floppy images will be written on host images, discarded otherwise
floppy.flushing = true
# floppies image paths
# if path is a directory will be created a virtual 1.44M floppy in sync with the given directory
#floppy.a.image =
#floppy.b.image =
# floppy geometry: 160k, 180k, 320k, 360k, 720k, 1200k, 1440k, 2880k
# 320k can read 160k, 720k can read 360k, 1440k can read 720k
floppy.a.geometry = 720k
floppy.b.geometry = 1440k
# mouse
mouse.serial.enabled = true
mouse.serial.3buttons = true
mouse.serial.com = 1
mouse.serial.scale.x = 0.5
mouse.serial.scale.y = 0.5
# debugger
debugger.openAtStartup = false
# turbo (warp mode)
# reading from port disable warp mode. writing to port enable warp mode
turbo.port = 68
# host ftp
# use hostftp.exe to transfer files to host
hostftp.enabled = true
hostftp.com = 2
# fast int13 - bypass real floppy/hd controller increasing performance
fastInt13.enabled = true
# Option roms
# 3 mandatory entries, 1 optional entry:
# option.rom.<N>.name = Option Rom label
# option.rom.<N>.address = Address where the rom will be loaded. E.g. D0000
# option.rom.<N>.path = rom path
# option.rom.<N>.refs = additional info if any (optional)
# declare the size of the hard disks: 10 or 24 can be configured (expressed in Mb)
# Use EmptyDiskMaker utility to create an image of 10404k or 25432k
hd.c.size = 10
hd.d.size = 10
# HD refs syntax: <hd image path for drive C>[,<hd image path for drive D>]
# hard disks will be recognized if the option rom contains the Xebec string
option.rom.1.name = Xebec HD
option.rom.1.address = D0000
option.rom.1.path = rom/IBM_XEBEC_5000059_1982.BIN
option.rom.1.refs = rom/H_C.img
# RTC
option.rom.2.name = GLaTICK
option.rom.2.address = D2000
option.rom.2.path = rom/GLaTICK_0.8.5_AT.ROM