SVI-728

{{Infobox computer

| Photo = Image:Svi728.jpg

| Type = Home computer

| Released = 1984

| Discontinued =

| Processor = Zilog Z80A @ 3.58 MHz

| Memory = 64 KB (+16 KB video memory)

| OS = MSX BASIC
MSX-DOS
CP/M 2.2

| predecessor = SV-328

| display = 256x192 pixel resolution, 256 colours

| related = SVI-738

| sound = AY-3-8910

| graphics = TMS9918A/TMS9929 (NTSC/PAL)

| family = MSX

| memory card = {{frac|3|1|2}}-inch floppy disks, ROM cartridge, cassette tapes

| input = Keyboard

}}

The SVI-728 is the first home computer from Spectravideo that complied fully with the MSX home computer specification.{{Cite web |title=SVI 728 |url=https://www.old-computers.com/museum/computer.asp?c=229 |archive-url=https://web.archive.org/web/20210803150524/https://www.old-computers.com/museum/computer.asp?c=229 |archive-date=2021-08-03 |access-date=2022-03-18 |website=OLD-COMPUTERS.COM : The Museum}}{{Cite web |last=Stewart |first=Terry |date=2021 |title=Spectravideo 728 |url=https://www.classic-computers.org.nz/collection/spectravideo-728.htm |access-date=2022-03-18 |website=Terry Stewart (Tezza)'s Vintage Classic Computer Collection}} It was introduced in 1984.{{Cite web |last=Ögren |last2=Ögren |last3=Edmundsson |last4=Jonsson |title=SVI-728 - HwB |url=http://www.hardwarebook.info/SVI-728 |archive-url=https://web.archive.org/web/20220703023222/https://www.hardwarebook.info/SVI-728 |archive-date=2022-07-03 |access-date=2022-03-18 |website=The Hardware Book - HwB}} The design is virtually identical to that of the earlier SV-328, which did not comply fully with the MSX standard.

The SVI-738 is a portable version of this computer.

Technical specifications

The SVI-728 had the following technical specifications:

;Microprocessor

  • Zilog Z80A with a clockspeed of 3.58 MHz.

;Memory

  • ROM: 32 KB
  • RAM: 64 KB (expandable to 256 KB)
  • VRAM: 16 KB

;Video

:*Graphical resolution: 256 x 192 pixels

:*text modes: 40 characters x 24 lines and 32 characters x 24 lines

:*colors: 16

:*sprites: 32

;Sound

:*3 sound channels

:*1 noise channels

:*1 envelope controller

;Connectors

References