HardLabs

Tralala8088homebrew

ppsilv·my_pcxt·INSUMOS/tralala-8088-homebrew-code-r196-trunk-hw-8088/tralala8088homebrew.kicad_pcb

Tralala8088homebrew PCB layout, top view — open source PIC board by ppsilv

About the Tralala8088homebrew PCB

Tralala8088homebrew is an open source PIC PCB design by ppsilv, published on GitHub. It is a 2-layer board measuring 258.4 × 104.1 mm, with 85 components from 53 distinct parts.

Its main chip is the PIC18(L)F4550-I/P or PIC18(L)F4553-I/P, from the PIC family. Other key parts include the 74HCT00, 7805, 8284, 8288 and 8088. By type, the board carries 24 capacitors, 15 ICs, 13 resistors, 12 connectors, 11 diodes and 3 transistors.

From the project

A try to make a pc-xt boar with SRAM

PIC 8259 The PC/XT ISA system has one 8259 controller, and the port numbers for configuring it are: Port 0x20: The master PIC's port A Port 0x21: The master PIC's port B

The IBM PC XT uses a single 8259 Programmable Interrupt Controller (PIC) chip that interfaces with the system through the following I/O locations: Ports 20h/0A0h: The command register, which is write only, and the status register, which is read only Ports 21h/0A1h: Corresponds to the slave PIC 8259 – The eCS Dump The BIOS traditionally maps the 8259 PIC's eight interrupt requests (IRQs) to interrupts 8 to 15 (0x08 to 0x0F).…

Main components on the Tralala8088homebrew

74HCT00780582848288808874HCT2458259A74HCT373AS6C4008SST39SF04074HCT13882C55APIC18(L)F4550-I/P or PIC18(L)F4553-I/P

Tralala8088homebrew bill of materials (BOM)

85 components, 53 distinct parts.

QtyPartRefs
1
74HCT00
U1
1
7805
U2
1
8284
U3
1
8288
U4
1
8088
U5
1
74HCT245
U6
1
8259A
U7
3
74HCT373
U8, U9, U10
1
AS6C4008
U11
1
SST39SF040
U12
1
74HCT138
U13
1
82C55A
U14
1
PIC18(L)F4550-I/P or PIC18(L)F4553-I/P
U15
3
2N3904
Q1, Q2, Q3
1
6-30 MHz
Y1
1
20.000 MHz
Y2
1
BARREL_JACK
CON1
2
Conn_01x02_Male
P1, P5
1
NMI
P2
1
LA1034 Logicport Connection
P3
Show 33 more
QtyPartRefs
1
Conn_01x05_Female
P4
3
CONN_01X10
P6, P9, P10
1
PIC ISP
P7
1
USB_B
P8
1
~{TEST}
P11
1
30R160U
F1
1
ROM type sel
JP1
1
Flash Write Protect
JP2
1
RESET_8088
SW1
1
RESET_PIC
SW2
1
1N4002
D1
1
5.6 V
D2
1
D
D3
1
Power
D4
3
1N4148
D5, D9, D10
1
LED_RED
D6
1
LED_YELLOW
D7
1
LED_GREEN
D8
1
BT151-500RT.127
D11
1
1000 uF
C1
1
330nF
C2
17
100nF
C3, C4, C5, C6, C7, C8, C9, C10 +9
1
4.7uF
C12
1
100uF
C17
2
22pF
C18, C19
1
220nF
C22
1
270
R1
4
10K
R2, R6, R7, R8
2
510
R3, R4
1
4.7K
R5
3
100
R9, R10, R11
1
47K
R12
1
1k
R13

Tralala8088homebrew design files

The KiCad project lives in the ppsilv/my_pcxt repository on GitHub; these links point at the commit this page was built from.

Tralala8088homebrew: common questions

What microcontroller does the Tralala8088homebrew use?

The Tralala8088homebrew is built around the PIC18(L)F4550-I/P or PIC18(L)F4553-I/P, from the PIC family.

How big is the Tralala8088homebrew PCB?

The Tralala8088homebrew measures 258.4 × 104.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Tralala8088homebrew?

85 components, from 53 distinct parts. The full bill of materials is listed on this page.

Where can I download the Tralala8088homebrew design files?

From the ppsilv/my_pcxt repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Tralala8088homebrew design in my own project?

The repository has no license, so all rights stay with ppsilv. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Tralala8088homebrew without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug PIC firmware against it before you order a PCB.

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